88 results on '"Ginn K"'
Search Results
2. MEDB-49. Relapsed SHH medulloblastomas in young children. Are there alternatives to full-dose craniospinal irradiation?
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Erker, C, Craig, B, Bailey, S, Massimino, M, Larouche, V, L Finlay, J, Kline, C, Michaiel, G, Margol, A, Cohen, K, Cacciotti, C, Harrods, V, Doris, K, AbdelBaki, M, Amayiri, N, Wang, Z, Hansford, J, Hukin, J, Salloum, R, Hoffman, L, Muray, J, Ginn, K, Zapotocky, Z, Baroni, L, Ramaswamy, V, Gilheens, S, Aguiera, D, Mazewski, C, Shah, S, Strother, D, Muller, S, Gajjar, A, Northcott, P, Clifford, S, Robinson, G, Bouffet, E, Lafay-Cousin, L, Erker, C, Craig, B, Bailey, S, Massimino, M, Larouche, V, L Finlay, J, Kline, C, Michaiel, G, Margol, A, Cohen, K, Cacciotti, C, Harrods, V, Doris, K, AbdelBaki, M, Amayiri, N, Wang, Z, Hansford, J, Hukin, J, Salloum, R, Hoffman, L, Muray, J, Ginn, K, Zapotocky, Z, Baroni, L, Ramaswamy, V, Gilheens, S, Aguiera, D, Mazewski, C, Shah, S, Strother, D, Muller, S, Gajjar, A, Northcott, P, Clifford, S, Robinson, G, Bouffet, E, and Lafay-Cousin, L
- Abstract
BACKGROUND/RATIONAL: Following initial irradiation sparing therapy, many young children with relapsed medulloblastoma can be salvaged with craniospinal irradiation (CSI). However, the interval to relapse is short and neurocognitive sequelae remain a major concern. The contribution of molecular subgrouping may help refine indications and modalities of salvage strategies in this population. METHOD: From a cohort of 151 young children with molecularly characterized relapsed medulloblastoma, subset analysis of the SHH medulloblastoma was conducted to describe the practice of salvage radiotherapy and associated post-relapse survival (PRS). RESULTS: Sixty-seven SHH medulloblastoma patients (46 M0; 54 GTR; 11 non-ND/MBEN) received salvage therapy with curative intent. Before relapse, 54 (80.6%) received conventional chemotherapy (CC), 13 (19.4%) high-dose chemotherapy (HDC), while seven had additional focal radiotherapy (fRT). Median time to relapse was 11.1 months (range 3.8-41.0) and 43.3% were localized. Thirty patients (16 localized relapse) underwent surgery. Forty-seven (71.2%) received salvage radiotherapy (20 with CC; 10 with HDC; 15 alone, two unknown). CSI and fRT accounted for 82% and 18% respectively. CSI median dose was 36Gy (range 18-39Gy). Ten patients (eight with localized relapse) received CSI doses ≤23.4Gy. Nineteen patients (28.8%) did not receive any radiotherapy (nine HDC; 10 CC only). Radiotherapy was associated with better 3-year PRS (73.0% versus 36.1%; p=0.001). All patients treated with CSI ≤ 23.4Gy were alive at median follow-up of 69 months(24-142). Six of nine patients treated with HDC without irradiation were alive at last follow-up. Sixty-three percent of patients received reduced dose CSI(≤23.4Gy), fRT, or no radiotherapy, and their PRS did not significantly differ from those who received CSI ≥ 30.6Gy (p = 0.54). CONCLUSION: While salvage CSI provided PRS benefit in this SHH medulloblastoma cohort, we report the use of reduced salva
- Published
- 2022
3. Revision of the Shoulder Normalization tests is required to include rhomboid major and teres major
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Ginn, K. A., Halaki, M., and Cathers, I.
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- 2011
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4. Risk Factors for Malignant Transformation of Squamous Intraepithelial Lesions
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Hunter, W.P., primary, Mah-Ginn, K., additional, Zhang, F., additional, Faquin, W., additional, August, M., additional, and Peacock, Z.S., additional
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- 2020
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5. Functional Anatomy and Assessment
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GINN, K, primary
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- 2003
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6. Static optimization underestimates antagonist muscle activity at the glenohumeral joint: A musculoskeletal modeling study.
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Kian, A, Pizzolato, C, Halaki, M, Ginn, K, Lloyd, D, Reed, D, Ackland, D, Kian, A, Pizzolato, C, Halaki, M, Ginn, K, Lloyd, D, Reed, D, and Ackland, D
- Abstract
Static optimization is commonly employed in musculoskeletal modeling to estimate muscle and joint loading; however, the ability of this approach to predict antagonist muscle activity at the shoulder is poorly understood. Antagonist muscles, which contribute negatively to a net joint moment, are known to be important for maintaining glenohumeral joint stability. This study aimed to compare muscle and joint force predictions from a subject-specific neuromusculoskeletal model of the shoulder driven entirely by measured muscle electromyography (EMG) data with those from a musculoskeletal model employing static optimization. Four healthy adults performed six sub-maximal upper-limb contractions including shoulder abduction, adduction, flexion, extension, internal rotation and external rotation. EMG data were simultaneously measured from 16 shoulder muscles using surface and intramuscular electrodes, and joint motion evaluated using video motion analysis. Muscle and joint forces were calculated using both a calibrated EMG-driven neuromusculoskeletal modeling framework, and musculoskeletal model simulations that employed static optimization. The EMG-driven model predicted antagonistic muscle function for pectoralis major, latissimus dorsi and teres major during abduction and flexion; supraspinatus during adduction; middle deltoid during extension; and subscapularis, pectoralis major and latissimus dorsi during external rotation. In contrast, static optimization neural solutions showed little or no recruitment of these muscles, and preferentially activated agonistic prime movers with large moment arms. As a consequence, glenohumeral joint force calculations varied substantially between models. The findings suggest that static optimization may under-estimate the activity of muscle antagonists, and therefore, their contribution to glenohumeral joint stability.
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- 2019
7. Risk Factors for Malignant Transformation of Squamous Intraepithelial Lesions
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Mah-Ginn, K., primary, Hunter, W., additional, Faquin, W., additional, and August, M., additional
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- 2019
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8. Does muscle guarding play a role in range of motion loss in patients with frozen shoulder?
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Hollmann, L, Halaki, Mark, Kamper, S J, Haber, Mark D, Ginn, K, Hollmann, L, Halaki, Mark, Kamper, S J, Haber, Mark D, and Ginn, K
- Abstract
Study Design: Observational: cross-sectional study. Background: Idiopathic frozen shoulder is a common cause of severe and prolonged disability characterised by spontaneous onset of pain with progressive shoulder movement restriction. Although spontaneous recovery can be expected the average length of symptoms is 30 months. Chronic inflammation and various patterns of fibrosis and contracture of capsuloligamentous structures around the glenohumeral joint are considered to be responsible for the signs and symptoms associated with frozen shoulder, however, the pathoanatomy of this debilitating condition is not fully understood. Objectives: To investigate the feasibility of a muscle guarding component to movement restriction in patients with idiopathic frozen shoulder. Methods: Passive shoulder abduction and external rotation range of motion (ROM) were measured in patients scheduled for capsular release surgery for frozen shoulder before and after the administration of general anaesthesia. Results: Five patients with painful, global restriction of passive shoulder movement volunteered for this study. Passive abduction ROM increased following anaesthesia in all participants, with increases ranging from approximately 55°-110° of pre-anaesthetic ROM. Three of these participants also demonstrated substantial increases in passive external rotation ROM following anaesthesia ranging from approximately 15°-40° of pre-anaesthetic ROM. Conclusion: This case series of five patients with frozen shoulder demonstrates that active muscle guarding, and not capsular contracture, may be a major contributing factor to movement restriction in some patients who exhibit the classical clinical features of idiopathic frozen shoulder. These findings highlight the need to reconsider our understanding of the pathoanatomy of frozen shoulder. Level of evidence: Level 4.
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- 2018
9. Malpractice Litigation Towards Oral Maxillofacial Surgeons and a Medicolegal Analysis of Extraction Cases
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He, P., primary, Mah-Ginn, K., additional, Karhade, D.S., additional, Gupta, R., additional, Adeeb, N., additional, Medford, S., additional, Donoff, R.B., additional, and Afshar, S., additional
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- 2018
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10. Scapular upward rotation position: Variable but symmetrical in swimmers without current shoulder pain
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McLaine, S., primary, Ginn, K., additional, Fell, J., additional, and Bird, M., additional
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- 2017
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11. Demonstration of Fluidic Throat Skewing for Thrust Vectoring in Structurally Fixed Nozzles
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Yagle, P. J., Miller, D. N., Ginn, K. B., and Hamstra, J. W.
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Jets -- Fluid dynamics ,Vector analysis -- Usage ,Engineering and manufacturing industries ,Science and technology - Abstract
The experimental demonstration of a fluidic, multiaxis thrust vectoring (MA TV) scheme is presented for a structurally fixed, afterburning nozzle referred to as the conformal fluidic nozzle (CFN). This concept for jet flow control features symmetric injection around the nozzle throat to provide throttling for jet area control and asymmetric injection to sub-sonically skew the sonic plane for jet vectoring. The conceptual development of the CFN was presented in a companion paper (Miller et al. [1]). In that study, critical design variables were shown to be the flap length and expansion area ratio of the nozzle, and the location, angle, and distribution of injected flow. Measures of merit were vectoring capability, gross thrust coefficient, and discharge coefficient. A demonstration of MATV was conducted on a 20 percent scale CFN test article across a range of nozzle pressure ratios (NPR), injector flow rates, and flow distributions. Both yaw and pitch vector angles of greater than 8 deg were obtained at NPR of 5.5. Yaw vector angles greater than 10 deg were achieved at lower NPR. Values of thrust coefficient for the CFN generally exceeded published measurements of shock-based vectoring methods. In terms of vectoring effectiveness (ratio of vector angle to percent injected flow), fluidic throat skewing was found to be comparable to shock-based vectoring methods. [DOI: 10.1115/1.1361109]
- Published
- 2001
12. Is there an optimal manual muscle test for subscapularis?
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Reed, D., primary, Halaki, M., additional, Jones, C., additional, Downes, A., additional, and Ginn, K., additional
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- 2016
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13. Shoulder impingement syndrome: how does opinion regarding aetiology influence treatment?
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Ginn, K., primary, Cools, A., additional, Lewis, J., additional, and Roy, J.-S., additional
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- 2015
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14. Determining consensus for physiotherapy treatment for a patient presenting with shoulder pain
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Hultenheim Klintberg, I., primary, Cools, A., additional, Holmgren, T., additional, Gunnarsson Holzhausen, A.-C., additional, Johansson, K., additional, Maenhout, A., additional, Moser, J., additional, Spunton, V., additional, and Ginn, K., additional
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- 2015
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15. Determining the contribution of active stiffness to reduced range of motion in frozen shoulder
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Hollmann, L., primary, Halaki, M., additional, Haber, M., additional, Herbert, R., additional, Dalton, S., additional, and Ginn, K., additional
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- 2015
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16. Changes in the activation pattern of shoulder muscles during open and closed chain abduction
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Reed, D., primary, Halaki, M., additional, and Ginn, K., additional
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- 2015
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17. Wideband Acoustical Holography.
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Gade, S., Hald, J., and Ginn, K. B.
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HOLOGRAPHY ,OPTICAL diffraction ,PSEUDONOISE sequences (Digital communications) ,DIGITAL communications research ,GEARBOXES - Abstract
The article describes an iterative algorithm for sparcity enforcing near-field acoustical holography over a wide frequency range based on the application of an optimized pseudo-random array geometry. Topics discussed include the method called wideband holography (WBH) as an example of remote sensing. Also mentioned are WBH being tested by real measurements on a pair of two-way loudspeakers and a car engine as well as typical application areas, such as engines and gearboxes.
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- 2016
18. Shoulder proprioception is associated with humeral torsion in adolescent baseball players
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Whiteley, R., primary, Adams, R., additional, Ginn, K., additional, and Nicholson, L., additional
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- 2010
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19. Subscapularis does not stabilize the glenohumeral joint during throwing
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Boettcher, C., primary, Ginn, K., additional, and Cathers, I., additional
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- 2010
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20. Reduced humeral torsion predicts throwing related in jury in high level adolescent baseball players
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Whiteley, R., primary, Adams, R., additional, Ginn, K., additional, and Nicholson, L., additional
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- 2010
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21. Cell Biology and Signaling
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Long, P. M., primary, Wesley, U. V., additional, Jaworski, D. M., additional, Rana, M., additional, Kiehl, T.-R., additional, So, K., additional, Gould, P., additional, Ajewung, N., additional, Kamnasaran, D., additional, Emmett, M. R., additional, Wang, X., additional, Marshall, A. G., additional, Ji, Y., additional, Fokt, I., additional, Skora, S., additional, Conrad, C. A., additional, Priebe, W., additional, Zhu, H., additional, Cao, X., additional, Keir, S., additional, Ali-Osman, F., additional, Lo, H.-W., additional, Da Fonseca, C. O., additional, Arun, V., additional, Wiley, J. C., additional, Kaur, H., additional, Guha, A., additional, Fenton, K., additional, Abdelwahab, M. G., additional, Stafford, P., additional, Rho, J. M., additional, Preul, M. C., additional, Scheck, A. C., additional, Brossier, N. M., additional, Carroll, S. L., additional, Gajadhar, A., additional, Mukherjee, J., additional, Wolf, A., additional, Hawkins, C., additional, Costa, P., additional, Cardoso, A. L. C., additional, de Almeida, L. P., additional, de Lima, M. C. P., additional, Canoll, P., additional, Bruce, J., additional, Lavon, I., additional, Granit, A., additional, Einstein, O., additional, Ben-Hur, T., additional, Siegal, T., additional, Pang, J. C., additional, Poon, W. S., additional, Zhou, L., additional, Ng, H.-K., additional, Rovin, R. A., additional, Lawrence, J. E., additional, Segula, J. J., additional, Winn, R. J., additional, Patil, S., additional, Burzynski, S. R., additional, Mrowczynski, E., additional, Grela, K., additional, Cheng, S., additional, Liu, K., additional, Feng, H., additional, Bacho, R., additional, Kazlauskas, A., additional, Smith, E. M., additional, Symes, K., additional, Hu, B., additional, Lee, C. Y., additional, Fotovati, A., additional, Dunn, S. E., additional, Proescholdt, M. A., additional, Storr, E.-M., additional, Lohmeier, A., additional, Brawanski, A., additional, Jarzynka, M. J., additional, Ravichandran, K. S., additional, Vuori, K., additional, Tang, C., additional, Nshikawa, R., additional, Johns, T. G., additional, Furnari, F. B., additional, Cavenee, W. K., additional, Zhong, J., additional, O'Neill, G. M., additional, Deleyrolle, L. P., additional, Rahman, M., additional, Dunbar, E. M., additional, Caldeira, M. A., additional, Reynolds, B. A., additional, Liu, X., additional, Yacyshyn, S., additional, Dasgupta, B., additional, Han, X., additional, Yang, X., additional, Wheeler, C. G., additional, Filippova, N., additional, Langford, C. P., additional, Ding, Q., additional, Fathallah, H. M., additional, Gillespie, G. Y., additional, Nabors, L. B., additional, Davidson, T. B., additional, Gortalum, F., additional, Ji, L., additional, Engell, K., additional, Sposto, R., additional, Asgharzadeh, S., additional, Erdreich-Epstein, A., additional, Lawn, S. O., additional, Weiss, S., additional, Senger, D., additional, Forsyth, P., additional, Latha, K., additional, Chumbalkar, V., additional, Li, M., additional, Gururaj, A., additional, Hwang, Y., additional, Maywald, R., additional, Dakeng, S., additional, Dao, L., additional, Baggerly, K., additional, Sawaya, R., additional, Aldape, K., additional, Cavenee, W., additional, Furnari, F., additional, Bogler, O., additional, Arumugam, J., additional, Sim, H., additional, Pineda, C. A., additional, Pan, Y., additional, Viapiano, M. S., additional, Van Schaick, J. A., additional, Akagi, K., additional, Burkett, S., additional, DiFabio, C., additional, Tuskan, R., additional, Walrath, J., additional, Reilly, K., additional, Dai, B., additional, Jing, Z., additional, Kang, S.-H., additional, Li, D., additional, Xie, K., additional, Huang, S., additional, Gong, X., additional, Vuong, Y., additional, Bota, D. A., additional, Stegh, A. H., additional, Inda, M.-d.-M., additional, Bonavia, R., additional, Mukasa, A., additional, Narita, Y., additional, Sah, D., additional, Vandenberg, S., additional, Brennan, C., additional, Johns, T., additional, Bachoo, R., additional, Hadwiger, P., additional, Tan, P., additional, DePinho, R., additional, Kusne, Y., additional, Meerson, A., additional, Rushing, E. J., additional, Yang, W., additional, McDonough, W., additional, Kislin, K., additional, Loftus, J. C., additional, Berens, M., additional, Lu, Z., additional, Ghosh, S., additional, Verma, A., additional, Zhou, H., additional, Chin, S., additional, Bruggers, C., additional, Kestle, J., additional, Khatua, S., additional, Broekman, M. L., additional, Maas, N. S., additional, Skog, J., additional, Breakefield, X. O., additional, Sena-Esteves, M., additional, de Vrij, J., additional, Lamfers, M., additional, Maas, N., additional, Dirven, C., additional, Esteves, M., additional, Broekman, M., additional, Chidambaram, A., additional, Dumur, C. I., additional, Graf, M., additional, Vanmeter, T. E., additional, Fillmore, H. L., additional, Broaddus, W. C., additional, Silber, J., additional, Ozawa, T., additional, Kastenhuber, E., additional, Djaballah, H., additional, Holland, E. C., additional, Huse, J. T., additional, Agnihotri, S., additional, Munoz, D., additional, Han, J. E., additional, Albesiano, E., additional, Pradilla, G., additional, Lim, M., additional, Alshami, J., additional, Sabau, C., additional, Seyed Sadr, M., additional, Anan, M., additional, Seyed Sadr, E., additional, Siu, V., additional, Del Maestro, R., additional, Trinh, G., additional, Le, P., additional, Petrecca, K., additional, Sonabend, A. M., additional, Soderquist, C., additional, Lei, L., additional, Guarnieri, P., additional, Leung, R., additional, Yun, J., additional, Sisti, J., additional, Castelli, M., additional, Bruce, S., additional, Bruce, R., additional, Ludwig, T., additional, Rosenfeld, S., additional, Bruce, J. N., additional, Phillips, J. J., additional, Huillard, E., additional, Polley, M.-Y., additional, Rosen, S. D., additional, Rowitch, D. H., additional, Werb, Z., additional, Sarkar, C., additional, Jha, P., additional, Pathak, P., additional, Suri, V., additional, Sharma, M. C., additional, Chattopadhyay, P., additional, Chosdol, K., additional, Suri, A., additional, Gupta, D., additional, Mahapatra, A. K., additional, Kapoor, G. S., additional, Zhan, Y., additional, Boockvar, J. A., additional, O'Rourke, D. M., additional, Kwatra, M. M., additional, Kim, J. W., additional, Park, C.-K., additional, Han, J. H., additional, Park, S. H., additional, Kim, S.-K., additional, Jung, H.-W., additional, Narayanan, R., additional, Levin, B. S., additional, Maeder, M. L., additional, Joung, J. K., additional, Nutt, C. L., additional, Louis, D. N., additional, Dudley, A., additional, Jayaram, P., additional, Pei, Z., additional, Shi, X., additional, Laterra, J., additional, Watkins, P. A., additional, Mawrin, C., additional, Rempel, S. A., additional, McClung, H. M., additional, McFarland, B. C., additional, Nozell, S. E., additional, Huszar, D., additional, Benveniste, E. N., additional, Burton, T., additional, Eisenstat, D. D., additional, Gibson, S. B., additional, Lukiw, W. J., additional, Cui, J. G., additional, Li, Y. Y., additional, Zhao, Y., additional, Culicchia, F., additional, See, W., additional, Pieper, R., additional, Luchman, A., additional, Stechishin, O., additional, Nguyen, S., additional, Kelly, J., additional, Blough, M., additional, Cairncross, G., additional, Shah, S. R., additional, Mohyeldin, A., additional, Adams, H., additional, Garzon-Muvdi, T., additional, Aprhys, C., additional, Quinones-Hinojosa, A., additional, Weeks, A. C., additional, Restrepo, A., additional, Ivanchuk, S., additional, Smith, C., additional, Rutka, J. T., additional, Sengupta, R., additional, Yang, L., additional, Burbassi, S., additional, Zhang, B., additional, Markant, S. L., additional, Yang, Z.-j., additional, Meucci, O., additional, Wechsler-Reya, R. J., additional, Rubin, J. B., additional, Wykosky, J., additional, Chin, L., additional, Auvergne, R. M., additional, Sim, F. J., additional, Wang, S., additional, Chandler-Militello, D., additional, Burch, J., additional, Li, X., additional, Bennet, A., additional, Mohile, N., additional, Pilcher, W., additional, Walter, K., additional, Johnson, M., additional, Achanta, P., additional, Natesan, S., additional, Goldman, S. A., additional, Beauchamp, A. S., additional, Gibo, D. M., additional, Debinski, W., additional, Jiang, H., additional, Martin, V., additional, Gomez-Manzano, C., additional, Johnson, D. G., additional, Alonso, M., additional, White, E. J., additional, Xu, J., additional, McDonnell, T., additional, Shinojima, N., additional, Fueyo, J., additional, Sandhya Rani, M. R., additional, Huang, P., additional, Prayson, R., additional, Hedayat, H., additional, Sloan, A. E., additional, Novacki, A., additional, Ahluwalia, M. S., additional, Tipps, R., additional, Gladson, C. L., additional, Liu, J.-L., additional, Mao, Z., additional, Yung, W. K. A., additional, Bhat, K., additional, Salazar, K., additional, Balasubramaniyan, V., additional, Vaillant, B., additional, Hollingsworth, F., additional, Gumin, J., additional, Diefes, K., additional, Patel, D., additional, Lang, F., additional, Colman, H., additional, Parsyan, A., additional, Shahbazian, D., additional, Alain, T., additional, Martineau, Y., additional, Petroulakis, E., additional, Larsson, O., additional, Gkogkas, C., additional, Topisirovic, I., additional, Mathonnet, G., additional, Tettweiler, G., additional, Hellen, C., additional, Pestova, T., additional, Svitkin, Y., additional, Sonenberg, N., additional, Zerrouqi, A., additional, Pyrzynska, B., additional, Van Meir, E., additional, Twitty, G. B., additional, Hong, S. W., additional, Lee, H. K., additional, Finniss, S., additional, Xiang, C., additional, Cazacu, S., additional, Brodie, C., additional, Ginn, K. F., additional, Wise, A., additional, Farassati, F., additional, Brown, C., additional, Barish, M., additional, deCarvalho, A. C., additional, Hasselbach, L., additional, Nelson, K., additional, Lemke, N., additional, Schultz, L., additional, Mikkelsen, T., additional, Onvani, S., additional, Kongkham, P., additional, Smith, C. A., additional, Bier, A., additional, Hershkovitz, H., additional, Kahana, S., additional, Decarvalho, A., additional, Massey, S. C., additional, and Swanson, K. R., additional
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- 2010
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22. Pulsed Injection for Nozzle Throat Area Control
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LOCKHEED MARTIN TACTICAL AIRCRAFT SYSTEMS FORT WORTH TX, Miller, Daniel N., Yagle, Patrick J., Bender, Erich E., Ginn, K. B., Smith, Brian R., LOCKHEED MARTIN TACTICAL AIRCRAFT SYSTEMS FORT WORTH TX, Miller, Daniel N., Yagle, Patrick J., Bender, Erich E., Ginn, K. B., and Smith, Brian R.
- Abstract
Computational fluid dynamics (CFD) and experimental methods were used to investigate two unsteady injection techniques for increasing the penetration and blockage of an injected stream in a confined, expanding crossflow. The obstruction produced by an injected stream is a basic mechanism related to the efficacy of fluidic nozzle control techniques. A CFD simulation methodology was developed for unsteady injection, which showed the effects of grid resolution, turbulence model, and numerical discretization on solution accuracy. CFD simulations were used to explore the basic effects of injector pulsing frequency, Mach number, and geometry on injector-jet trajectory, penetration, diameter, and blockage in a nozzle crossflow. Two actuators were experimentally evaluated for pulsing an injected stream that issues into a nozzle crossflow. CFD simulations were also used to investigate a pulsed-ejection technique, which used a pulsed high- pressure primary stream to boost the entrainment of a co-annular, low-pressure secondary flow. Simulations revealed the effects of primary-jet pulsing frequency and ejector geometry on ejector pumping effectiveness relative to a steady-jet ejector. A simplified CFD model was developed to capture the essential effect of the unsteady primary stream on the secondary flow, without the need of a highly resolved simulation. Results of CFD solutions were compared with available data., Prepared in cooperation with the University of Tennessee Space Institute, Mechanical and Aerospace Engr. Dept. Tullahoma, TN.
- Published
- 2001
23. Demonstration of Fluidic Throat Skewing for Thrust Vectoring in Structurally Fixed Nozzles
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Yagle, Patrick J., primary, Miller, Daniel N., additional, Ginn, K. Brant, additional, and Hamstra, Jeffrey W., additional
- Published
- 2000
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24. Engine Noise: Sound Source Location Using the STSF Technique
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Ginn, K. B., primary and Hald, J., additional
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- 1993
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25. IMPROVED SUPPRESSION OF UNCORRELATED BACKGROUND NOISE WITH THE STSF TECHNIQUE
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HALD, J., primary and GINN, K. B., additional
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- 1992
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26. Optimal extrinsic base fabrication for high performance SiGe HBTs for RF communication applications.
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Tang, R., Ford, J., Pryor, B., Anandakugan, S., Welch, P., Ginn, K., Burt, C., Yeung, B., and Babcock, J.
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- 1997
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27. Conservative treatment for shoulder pain: Prognostic indicators of outcome
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GINN, K
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- 2004
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28. Light & colour for optimum health.
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Ginn K
- Published
- 2002
29. Ottawa's winterlude.
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Jenkins, P. and Ginn, K.
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- *
FESTIVALS - Abstract
Visits Ottawa, where for ten days in icy February, hardy revelers chase away the winter doldrums with Winterlude, a festival of displays and sports events which energize the Canadian capital. INSET: IF you go...(travel tips)..
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- 1990
30. Passive mobilisation of shoulder region joints plus advice and exercise does not reduce pain and disability more than advice and exercise alone: a randomised trial
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Chen, J. F., Ginn, K. A., and Rob Herbert
31. Optimal extrinsic base fabrication for high performance SiGe HBTs for RF communication applications
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Tang, R., primary, Ford, J., additional, Pryor, B., additional, Anandakugan, S., additional, Welch, P., additional, Ginn, K., additional, Burt, C., additional, Yeung, B., additional, and Babcock, J., additional
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32. Techniques were chosen from experience.
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Chen J, Ginn K, and Herbert R
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- 2009
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33. ICAOR 2006: trunk and limb muscle activity during the application of a mobilisation type force to the vertebral column.
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Blaich R, Ginn K, Cathers I, and Lee M
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- 2006
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34. Unraveling the complexity of the senescence-associated secretory phenotype in adamantinomatous craniopharyngioma using multimodal machine learning analysis.
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Prince EW, Apps JR, Jeang J, Chee K, Medlin S, Jackson EM, Dudley R, Limbrick D, Naftel R, Johnston J, Feldstein N, Prolo LM, Ginn K, Niazi T, Smith A, Kilburn L, Chern J, Leonard J, Lam S, Hersh DS, Gonzalez-Meljem JM, Amani V, Donson AM, Mitra SS, Bandopadhayay P, Martinez-Barbera JP, and Hankinson TC
- Subjects
- Humans, Biomarkers, Tumor metabolism, Biomarkers, Tumor genetics, Phenotype, Gene Expression Regulation, Neoplastic, Child, Male, Female, Craniopharyngioma metabolism, Craniopharyngioma pathology, Craniopharyngioma genetics, Pituitary Neoplasms pathology, Pituitary Neoplasms metabolism, Pituitary Neoplasms genetics, Cellular Senescence, Machine Learning
- Abstract
Background: Cellular senescence can have positive and negative effects on the body, including aiding in damage repair and facilitating tumor growth. Adamantinomatous craniopharyngioma (ACP), the most common pediatric sellar/suprasellar brain tumor, poses significant treatment challenges. Recent studies suggest that senescent cells in ACP tumors may contribute to tumor growth and invasion by releasing a senesecence-associated secretory phenotype. However, a detailed analysis of these characteristics has yet to be completed., Methods: We analyzed primary tissue samples from ACP patients using single-cell, single-nuclei, and spatial RNA sequencing. We performed various analyses, including gene expression clustering, inferred senescence cells from gene expression, and conducted cytokine signaling inference. We utilized LASSO to select essential gene expression pathways associated with senescence. Finally, we validated our findings through immunostaining., Results: We observed significant diversity in gene expression and tissue structure. Key factors such as NFKB, RELA, and SP1 are essential in regulating gene expression, while senescence markers are present throughout the tissue. SPP1 is the most significant cytokine signaling network among ACP cells, while the Wnt signaling pathway predominantly occurs between epithelial and glial cells. Our research has identified links between senescence-associated features and pathways, such as PI3K/Akt/mTOR, MYC, FZD, and Hedgehog, with increased P53 expression associated with senescence in these cells., Conclusions: A complex interplay between cellular senescence, cytokine signaling, and gene expression pathways underlies ACP development. Further research is crucial to understand how these elements interact to create novel therapeutic approaches for patients with ACP., (© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Neuro-Oncology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
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- 2024
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35. Molecular-guided therapy for the treatment of patients with relapsed and refractory childhood cancers: a Beat Childhood Cancer Research Consortium trial.
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Sholler GLS, Bergendahl G, Lewis EC, Kraveka J, Ferguson W, Nagulapally AB, Dykema K, Brown VI, Isakoff MS, Junewick J, Mitchell D, Rawwas J, Roberts W, Eslin D, Oesterheld J, Wada RK, Pastakia D, Harrod V, Ginn K, Saab R, Bielamowicz K, Glover J, Chang E, Hanna GK, Enriquez D, Izatt T, Halperin RF, Moore A, Byron SA, Hendricks WPD, and Trent JM
- Subjects
- Child, Humans, Antineoplastic Combined Chemotherapy Protocols adverse effects, Neoplasm Recurrence, Local drug therapy, Neoplasm Recurrence, Local etiology, Neuroblastoma drug therapy, Neuroblastoma genetics
- Abstract
Background: Children with relapsed central nervous system (CNS tumors), neuroblastoma, sarcomas, and other rare solid tumors face poor outcomes. This prospective clinical trial examined the feasibility of combining genomic and transcriptomic profiling of tumor samples with a molecular tumor board (MTB) approach to make real‑time treatment decisions for children with relapsed/refractory solid tumors., Methods: Subjects were divided into three strata: stratum 1-relapsed/refractory neuroblastoma; stratum 2-relapsed/refractory CNS tumors; and stratum 3-relapsed/refractory rare solid tumors. Tumor samples were sent for tumor/normal whole-exome (WES) and tumor whole-transcriptome (WTS) sequencing, and the genomic data were used in a multi-institutional MTB to make real‑time treatment decisions. The MTB recommended plan allowed for a combination of up to 4 agents. Feasibility was measured by time to completion of genomic sequencing, MTB review and initiation of treatment. Response was assessed after every two cycles using Response Evaluation Criteria in Solid Tumors (RECIST). Patient clinical benefit was calculated by the sum of the CR, PR, SD, and NED subjects divided by the sum of complete response (CR), partial response (PR), stable disease (SD), no evidence of disease (NED), and progressive disease (PD) subjects. Grade 3 and higher related and unexpected adverse events (AEs) were tabulated for safety evaluation., Results: A total of 186 eligible patients were enrolled with 144 evaluable for safety and 124 evaluable for response. The average number of days from biopsy to initiation of the MTB-recommended combination therapy was 38 days. Patient benefit was exhibited in 65% of all subjects, 67% of neuroblastoma subjects, 73% of CNS tumor subjects, and 60% of rare tumor subjects. There was little associated toxicity above that expected for the MGT drugs used during this trial, suggestive of the safety of utilizing this method of selecting combination targeted therapy., Conclusions: This trial demonstrated the feasibility, safety, and efficacy of a comprehensive sequencing model to guide personalized therapy for patients with any relapsed/refractory solid malignancy. Personalized therapy was well tolerated, and the clinical benefit rate of 65% in these heavily pretreated populations suggests that this treatment strategy could be an effective option for relapsed and refractory pediatric cancers., Trial Registration: ClinicalTrials.gov, NCT02162732. Prospectively registered on June 11, 2014., (© 2024. The Author(s).)
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- 2024
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36. ROS1 Alterations as a Potential Driver of Gliomas in Infant, Pediatric, and Adult Patients.
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Meredith DM, Cooley LD, Dubuc A, Morrissette J, Sussman RT, Nasrallah MP, Rathbun P, Yap KL, Wadhwani N, Bao L, Wolff DJ, Ida C, Sukhanova M, Horbinski C, Jennings LJ, Farooqi M, Gener M, Ginn K, Kam KL, Sasaki K, Kanagal-Shamanna R, Alexandrescu S, Brat D, and Lu X
- Subjects
- Humans, Child, Adult, Infant, Young Adult, Protein-Tyrosine Kinases genetics, Retrospective Studies, Proto-Oncogene Proteins genetics, Mutation, Glioma genetics, Glioma pathology, Glioblastoma genetics, Brain Neoplasms genetics, Brain Neoplasms pathology
- Abstract
Gliomas harboring oncogenic ROS1 alterations are uncommon and primarily described in infants. Our goal was to characterize the clinicopathological features and molecular signatures of the full spectrum of ROS1 fusion-positive gliomas across all age groups. Through a retrospective multi-institutional collaboration, we report a collection of unpublished ROS1 fusion gliomas along with the characterization and meta-analysis of new and published cases. A cohort of 32 new and 58 published cases was divided into the following 3 age groups: 19 infants, 40 pediatric patients, and 31 adults with gliomas. Tumors in infants and adults showed uniformly high-grade morphology; however, tumors in pediatric patients exhibited diverse histologic features. The GOPC::ROS1 fusion was prevalent (61/79, 77%) across all age groups, and 10 other partner genes were identified. Adult tumors showed recurrent genomic alterations characteristic of IDH wild-type glioblastoma, including the +7/-10/CDKN2A deletion; amplification of CDK4, MDM2, and PDGFRA genes; and mutations involving TERTp, TP53, PIK3R1, PIK3CA, PTEN, and NF1 genes. Infant tumors showed few genomic alterations, whereas pediatric tumors showed moderate genomic complexity. The outcomes were significantly poorer in adult patients. Although not statistically significant, tumors in infant and pediatric patients with high-grade histology and in hemispheric locations appeared more aggressive than tumors with lower grade histology or those in nonhemispheric locations. In conclusion, this study is the largest to date to characterize the clinicopathological and molecular signatures of ROS1 fusion-positive gliomas from infant, pediatric, and adult patients. We conclude that ROS1 likely acts as a driver in infant and pediatric gliomas and as a driver or codriver in adult gliomas. Integrated comprehensive clinical testing might be helpful in identifying such patients for possible targeted therapy., (Copyright © 2023. Published by Elsevier Inc.)
- Published
- 2023
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37. A phase II trial of nifurtimox combined with topotecan and cyclophosphamide for refractory or relapsed neuroblastoma and medulloblastoma.
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Eslin D, Zage PE, Bergendahl G, Lewis E, Roberts W, Kraveka J, Mitchell D, Isakoff MS, Rawwas J, Wada RK, Fluchel M, Brown VI, Ginn K, Higgins T, BeeravallyNagulapally A, Dykema K, Hanna G, Ferguson W, and Saulnier Sholler GL
- Subjects
- Child, Humans, Topotecan adverse effects, Nifurtimox therapeutic use, Neoplasm Recurrence, Local pathology, Cyclophosphamide, Antineoplastic Combined Chemotherapy Protocols adverse effects, Medulloblastoma drug therapy, Neuroblastoma drug therapy, Neuroblastoma etiology, Cerebellar Neoplasms
- Abstract
Children with relapsed/refractory (R/R) neuroblastoma (NB) and medulloblastoma (MB) have poor outcomes. We evaluated the efficacy of nifurtimox (Nfx) in a clinical trial for children with R/R NB and MB. Subjects were divided into three strata: first relapse NB, multiply R/R NB, and R/R MB. All patients received Nfx (30 mg/kg/day divided TID daily), Topotecan (0.75 mg/m
2 /dose, days 1-5) and Cyclophosphamide (250 mg/m2 /dose, days 1-5) every 3 weeks. Response was assessed after every two courses using International Neuroblastoma Response Criteria and Response Evaluation Criteria in Solid Tumors (RECIST) criteria. One hundred and twelve eligible patients were enrolled with 110 evaluable for safety and 76 evaluable for response. In stratum 1, there was a 53.9% response rate (CR + PR), and a 69.3% total benefit rate (CR + PR + SD), with an average time on therapy of 165.2 days. In stratum 2, there was a 16.3% response rate, and a 72.1% total benefit rate, and an average time on study of 158.4 days. In stratum 3, there was a 20% response rate and a 65% total benefit rate, an average time on therapy of 105.0 days. The most common side effects included bone marrow suppression and reversible neurologic complications. The combination of Nfx, topotecan and cyclophosphamide was tolerated, and the objective response rate plus SD of 69.8% in these heavily pretreated populations suggests that this combination is an effective option for patients with R/R NB and MB. Although few objective responses were observed, the high percentage of stabilization of disease and prolonged response rate in patients with multiply relapsed disease shows this combination therapy warrants further testing., (© 2023 The Authors. International Journal of Cancer published by John Wiley & Sons Ltd on behalf of UICC.)- Published
- 2023
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38. Ultrasound assessment of the inferior glenohumeral capsule in normal shoulders-a study of measurement variables and reliability.
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Shrestha-Taylor S, Ginn K, Poulos A, and Clarke JL
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- Male, Female, Humans, Reproducibility of Results, Ultrasonography, Shoulder, Shoulder Joint diagnostic imaging
- Abstract
Objectives: To establish the reliability of a standardised ultrasound protocol to measure normal inferior glenohumeral capsule (IGHC) thickness and to investigate the effects of age, sex, hand dominance and angles of abduction on the thickness., Methods: IGHC images were obtained at 60
o , 90o and 180o abduction angles of 151 asymptomatic shoulders in supine position. Following the proposed guidelines, three sonographers blindly measured the IGHC thicknesses for intra- and interrater reliability assessments., Results: The intrarater reliability was excellent (intraclass correlation coefficient value = 0.95; 95% CI = 0.92-0.97). The interrater reliability was moderate (intraclass correlation coefficient value = 0.74; 95% CI = 0.60-0.83). The mean IGHC thickness values in mm ± SD at 60o , 90o and 180o abduction angles for males were 3.3 ± 0.93, 3.0 ± 0.80 and 2.6 ± 0.55 and those for females were 2.7 ± 0.86, 2.4 ± 0.7 and 2.0 ± 0.56 respectively. Although males had thicker IGHC, the rate at which the thickness reduced with increased abduction was same in both males and females. Age and hand dominance had no effect., Conclusion: The normal IGHC thickness varies with sex and the abduction angle of the arm at which it is measured. A large variation of IGHC thickness exists in the normal population., Advances in Knowledge: The results of this study discourage the use of a single value of IGHC thickness and emphasise the importance of comparing the thickness of the symptomatic side to that of the asymptomatic side of the same subject at the same abduction level. The guidelines provided in this study can be used in clinical practice and in future research studies., Competing Interests: Competing interestsAuthors have no conflicts of interest to declare.- Published
- 2023
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39. Ultrasound Features for the Diagnosis of Adhesive Capsulitis/Frozen Shoulder: A Systematic Review.
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Shrestha-Taylor S, Clarke JL, Poulos A, and Ginn K
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- Humans, Reproducibility of Results, Ultrasonography, Bursitis diagnostic imaging, Shoulder Joint diagnostic imaging
- Abstract
While ultrasound has become a preferred tool for musculoskeletal imaging, differing ultrasound findings that have been reported in patients with adhesive capsulitis can create confusion and misconceptions. This systematic review was aimed at summarizing all the ultrasound features currently described in the literature and providing a critical analysis of the sources to allow the readers to make a well-informed decision on the reliability of these features in the diagnosis of this condition. Databases were searched for original studies up to August 2021. Twenty-three studies were included. The QUADAS-2 (Quality Assessment of Diagnostic Accuracy Studies 2) tool was used to assess the quality of each selected article. Fourteen ultrasound features were identified. A quality analysis of all ultrasound features was performed using the GRADE (Grading of Recommendations, Assessment, Development and Evaluations) framework. All studies exhibited considerable heterogeneity in investigated ultrasound features and methodologies employed; therefore, meta-analysis was not considered to be appropriate. Hence, narrative synthesis was performed. The overall quality of each ultrasound outcome was found to be of "low" to "very low" level, and the generalisability of the results was also thought to be limited. Cautious interpretation and clinical correlation are recommended while applying these ultrasound features in clinical practice., Competing Interests: Conflict of interest disclosure We declare that no potential competing interests exist., (Copyright © 2022 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
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40. Creating a Vision for a Healthier Workforce Using a Systems-Based Approach.
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Walkner L, May K, Goldman B, Shultz H, Armbruster S, Grimm B, Hawley S, Menke A, Orr S, Wilson K, Moody J, Uden-Holman T, and Ginn K
- Subjects
- Humans, Workforce, Health Workforce, Public Health education
- Abstract
Context: The public health system faces unprecedented challenges due to the pandemic, racism, health inequity, and the politicization of public health. At all levels of the system, the workforce is experiencing distress, burnout, safety issues, and attrition. Public health is being challenged to demonstrate and justify its impact and value, while also leveraging opportunities for learning and system strengthening., Program: To explore the current state and identify opportunities to strengthen the public health system, the Region 7 Midwestern Public Health Training Center (MPHTC), with support from Engaging Inquiry, embarked on a distinctive type of systems analysis, called "dynamic systems mapping.", Implementation: This approach brought together diverse sectors of public health partners in the region to develop a rich contextual narrative and system-level understanding to highlight and align existing and emergent strengths, areas for growth, and tangible goals for the immediate- and long-term sustainability of local and regional health., Evaluation: Focus groups and workshops were conducted with diverse practitioners to identify upstream causes and downstream effects of 11 key forces driving system behavior. These focus groups resulted in the development of a visual map that MPHTC is utilizing to identify opportunities for leverage, develop strategies to maximize the potential impact of these leverage points, as well as facilitate continuous learning., Discussion: Public health utilization of systems mapping is a valuable approach to strengthening local and national system responses to current and future public health needs. Outcomes and lessons learned from the systems mapping process are discussed., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2022
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41. A comparison between measurement properties of four shoulder-related outcome measures in Nepalese patients with shoulder pain.
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Kc S, Sharma S, Ginn K, and Reed D
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- Disability Evaluation, Humans, Nepal, Outcome Assessment, Health Care, Pain Measurement methods, Quality of Life psychology, Reproducibility of Results, Surveys and Questionnaires, Shoulder, Shoulder Pain
- Abstract
Purpose: The Patient-Specific Functional Scale (PSFS), Disability of the Arm, Shoulder and Hand (DASH), Quick-DASH, and Shoulder Pain and Disability Index (SPADI) are frequently used instruments in shoulder functional assessment. They are available in Nepali and all but the PSFS has been validated for shoulder assessment. Therefore, the aim of this study was to validate the Nepali PSFS in shoulder pain patients and to compare validity, reliability, and responsiveness of all four instruments to provide a recommendation for their use., Method: Patients attending physiotherapy completed the Nepali PSFS at baseline and follow-up (1-3 weeks). It was tested for reliability using internal consistency (Cronbach's α), intraclass correlation coefficient (ICC), construct validity by hypothesis testing and responsiveness by anchor-based method using Area Under the Curve (AUC). The instruments were compared based on reported measurement properties and patients' preference., Results: 156 patients enrolled at baseline and 121 at follow-up. The PSFS showed sufficient reliability (α = 0.70, ICC = 0.82), construct validity (all three hypotheses met) and responsiveness (AUC = 0.83). Measurement property comparison demonstrated adequate reliability and validity, while PSFS was the most responsive instrument. Patients favoured the verbal rating scale of the DASH/Quick-DASH. The DASH had a lower completion rate for 'culturally sensitive' and 'uncommon' activities., Conclusion: The Nepali PSFS is a reliable, valid, and responsive instrument in shoulder functional assessment. The combined use of the Quick-DASH or SPADI with the PSFS is recommended for a comprehensive assessment of Nepali shoulder pain patients in clinical and research settings. They are shorter, more appropriate to the Nepali context and provide balanced self-evaluation., (© 2022. The Author(s).)
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- 2022
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42. Does participatory ergonomics reduce musculoskeletal pain in sonographers? A mixed methods study.
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Sweeney K, Ginn K, Spurway J, Clarke J, and Mackey M
- Abstract
Introduction: Sonographers in the Western New South Wales Local Health District (WNSWLHD) reported a musculoskeletal pain prevalence rate of 95%. Participatory ergonomics, where workers are consulted about improving work conditions, was utilised to identify work-related musculoskeletal disorder (WMSD) risks and potential solutions. The aim of this study was to compare the prevalence of WMSD in a cohort of sonographers before and after implementation of ergonomic changes that were driven by recommendations from a participatory ergonomics approach., Methods: This observational mixed methods study analysed the impact of participatory ergonomic-driven interventions on changes on musculoskeletal pain in a cohort of sonographers employed within the WNSWLHD. A retrospective analysis of 10 sonographer WMSD pain surveys over five sites was completed, along with semi-structured interviews regarding which interventions were perceived as useful, which interventions were not implemented and any barriers to implementation., Results: Installation of patient monitors, use of ergonomic scanning techniques and job rotation were perceived as responsible for decreased musculoskeletal pain. Taking lunch breaks and microbreaks, use of antifatigue mats and having two sonographers perform mobile exams were not fully implemented. No interventions were perceived as responsible for increased pain., Conclusion: This small study provides preliminary evidence that a participatory ergonomics approach facilitated identification of occupation and site-specific risks for WMSD in the WNSWLHD, allowing implementation of ergonomic changes to be tailored to the workplace, resulting in a safer work environment for sonographers., Competing Interests: Declaration of conflicting interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2021.)
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- 2022
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43. Effectiveness of workshops to teach a home-based exercise program (BEST at Home) for preventing falls in community-dwelling people aged 65 years and over: a pragmatic randomised controlled trial.
- Author
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Bates A, Furber S, Sherrington C, van den Dolder P, Ginn K, Bauman A, Howard K, Kershaw M, Franco L, Chittenden C, and Tiedemann A
- Subjects
- Aged, Exercise Therapy, Fear, Female, Humans, Male, Quality of Life, Accidental Falls prevention & control, Independent Living
- Abstract
Background: Falls are a significant public health issue. There is strong evidence that exercise can prevent falls and the most effective programs are those that primarily involve balance and functional exercises, however uptake of such programs is low. Exercise prescribed during home visits by health professionals can prevent falls however this strategy would be costly to deliver at scale. We developed a new approach to teach home exercise through group-based workshops delivered by physiotherapists. The primary aim was to determine the effect of this approach on the rate of falls among older community-dwelling people over 12 months. Secondary outcomes included the proportion of people falling, fear of falling, physical activity, lower limb strength, balance and quality of life., Methods: A randomised controlled trial was conducted among community-dwelling people aged ≥65 in New South Wales, Australia. Participants were randomised to either the intervention group (exercise targeting balance and lower limb strength) or control group (exercise targeting upper limb strength)., Results: A total of 617 participants (mean age 73 years, +SD 6, 64% female) were randomly assigned to the intervention group (n = 307) or control group (n = 310). There was no significant between-group difference in the rate of falls (IRR 0.91, 95% CI 0.64 to 1.29, n = 579, p = 0.604) or the number of participants reporting one or more falls (IRR 0.99, 95% CI 0.76 to 1.29, n = 579, p = 0.946) during 12 month follow-up. A significant improvement in the intervention group compared to control group was found for fear of falling at 3, 6 and 12 months (mean difference 0.50, 95% CI 0.2 to 0.8, p = 0.004; 0.39, 95% CI 0.001 to 0.8, p = 0.049; 0.46, 95% CI 0.006 to 0.9, p = 0.047, respectively), and gait speed at 3 months (mean difference 0.09 s, 95% CI 0.003 to 0.19, p = 0.043). No statistically significant between-group differences were detected for the other secondary outcomes., Conclusions: There was no significant intervention impact on the rate of falls, but the program significantly reduced fear of falling and improved gait speed. Other exercise delivery approaches are needed to ensure an adequate intensity of balance and strength challenge and dose of exercise to prevent falls., (© 2022. The Author(s).)
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- 2022
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44. The effectiveness of EMG-driven neuromusculoskeletal model calibration is task dependent.
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Kian A, Pizzolato C, Halaki M, Ginn K, Lloyd D, Reed D, and Ackland D
- Subjects
- Adult, Biomechanical Phenomena, Calibration, Electromyography, Humans, Muscle, Skeletal, Range of Motion, Articular, Models, Biological, Shoulder Joint
- Abstract
Calibration of neuromusculoskeletal models using functional tasks is performed to calculate subject-specific musculotendon parameters, as well as coefficients describing the shape of muscle excitation and activation functions. The objective of the present study was to employ a neuromusculoskeletal model of the shoulder driven entirely from muscle electromyography (EMG) to quantify the influence of different model calibration strategies on muscle and joint force predictions. Three healthy adults performed dynamic shoulder abduction and flexion, followed by calibration tasks that included reaching, head touching as well as active and passive abduction, flexion and axial rotation, and submaximal isometric abduction, flexion and axial rotation contractions. EMG data were simultaneously measured from 16 shoulder muscles using surface and intramuscular electrodes, and joint motion evaluated using video motion analysis. Muscle and joint forces were calculated using subject-specific EMG-driven neuromusculoskeletal models that were uncalibrated and calibrated using (i) all calibration tasks (ii) sagittal plane calibration tasks, and (iii) scapular plane calibration tasks. Joint forces were compared to published instrumented implant data. Calibrating models across all tasks resulted in glenohumeral joint force magnitudes that were more similar to instrumented implant data than those derived from any other model calibration strategy. Muscles that generated greater torque were more sensitive to calibration than those that contributed less. This study demonstrates that extensive model calibration over a broad range of contrasting tasks produces the most accurate and physiologically relevant musculotendon and EMG-to-activation parameters. This study will assist in development and deployment of subject-specific neuromusculoskeletal models., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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45. Measurement properties of the Nepali version of the Quick-DASH in patients with shoulder pain.
- Author
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Kc S, Sharma S, Ginn K, and Reed D
- Subjects
- Hand, Humans, Reproducibility of Results, Surveys and Questionnaires, Disability Evaluation, Shoulder Pain diagnosis
- Abstract
Purpose: To examine the measurement properties of the Nepali version of the Quick-Disabilities of the Arm, Shoulder and Hand (QuickDASH-NP)., Materials and Methods: The Nepali DASH and Shoulder Pain and Disability Index (SPADI) were completed at baseline assessment, and again at follow-up with the Nepali Global Rating of Change (GROC-NP) score. The 11 items of the QuickDASH-NP were extracted from the DASH and tested for confirmatory factory analysis (CFA), exploratory factor analysis (EFA), internal consistency (α), item-total correlation (ITC), test-retest reliability (ICC), measurement errors, hypothesis testing (correlation with DASH and SPADI) and responsiveness (effect size-ES, standardised response mean-SRM)., Results: A total of 156 participants completed questionnaires at baseline and 121 at follow-up with all questionnaires valid (no participant leaving more than one question blank). CFA suggested a poor fit for the single-factor model. The EFA demonstrated two factors with acceptable internal consistency (α = 0.79 and 0.75) for each factor. The test-retest reliability was excellent (ICC = 0.94; 95%CI:0.92-0.98), correlation was positive and very strong with the DASH-NP (r = 0.96) and strong with the SPADI-NP (r = 0.81). The Standard Error of Measurement was 2.83 and Smallest Detectable Change 7.84/100. The ES and SRM were moderate to high., Conclusions: The QuickDASH-NP is reliable, valid, and able to detect change in shoulder symptoms among Nepali participants. It offers a short, easy to complete self-reporting tool for clinical use and research., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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46. Clinical Validation of Somatic Mutation Detection by the OncoScan CNV Plus Assay.
- Author
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Smith SC, Farooqi MS, Gener MA, Ginn K, Joyce JM, Bendorf TM, and Cooley LD
- Subjects
- Adolescent, Algorithms, Brain Neoplasms pathology, Child, Child, Preschool, Cohort Studies, DNA Copy Number Variations, Data Accuracy, Female, Humans, Infant, Infant, Newborn, Male, Real-Time Polymerase Chain Reaction methods, Sensitivity and Specificity, Young Adult, Brain Neoplasms genetics, High-Throughput Nucleotide Sequencing methods, Mutation, Polymorphism, Single Nucleotide, Tissue Array Analysis methods
- Abstract
The OncoScan CNV Plus Assay (OS+) is a single-nucleotide polymorphism microarray platform that can detect 74 hotspot somatic mutations (SMs) in nine genes via molecular inversion probes. We report validation of the SM component of OS+ using a cohort of pediatric high-grade brain tumor specimens. SM calls were generated from 46 brain tumor cases, most tested orthogonally via bidirectional Sanger sequencing. The initial calling algorithm result showed that 31 tumors were positive and 15 were negative for SM, with a total of 71 OS+ SM calls [28 high-confidence (HC) and 43 low-confidence (LC)]. Sanger sequencing was performed for 54 of the 71 calls (27 HC and 27 LC), as well as for 21 randomly selected hotspots across the 15 OS+ negative cases. HC calls (except EGFR) Sanger sequencing confirmed positive, negative calls confirmed negative, but none of the LC calls were Sanger-confirmed positive. An update of the OS+ algorithm resolved the LC calls, but of the 11 HC SM EGFR calls, Sanger sequencing confirmed only one. Two PTEN SM calls by OS+ in two separate cases were also negative per Sanger sequencing. We conclude that a majority of HC OS+ SM calls were accurate, except calls identified in EGFR and PTEN. Clinically, we report SMs identified by OS+ only after Sanger sequencing verification., (Copyright © 2021 Association for Molecular Pathology and American Society for Investigative Pathology. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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47. The effectiveness of ergonomics interventions in reducing upper limb work-related musculoskeletal pain and dysfunction in sonographers, surgeons and dentists: a systematic review.
- Author
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Sweeney K, Mackey M, Spurway J, Clarke J, and Ginn K
- Subjects
- Dentists, Humans, Musculoskeletal Pain etiology, Occupational Diseases etiology, Surgeons, Ultrasonography, Upper Extremity physiopathology, Work physiology, Ergonomics methods, Musculoskeletal Pain prevention & control, Occupational Diseases prevention & control, Occupational Health statistics & numerical data
- Abstract
The aim of this systematic review was to summarise the effects of ergonomics interventions on work-related upper limb musculoskeletal pain and dysfunction, and on productivity in sonographers, surgeons and dentists. A total of 31 studies were included. All studies reported effects on upper limb pain. Nine studies reported effects on dysfunction and only two studies reported effects on productivity. Moderately strong evidence in reducing upper limb pain was found for instigation of microbreaks into long duration surgical procedures, and the use of wider, lighter handles in dental instruments. Moderate evidence was also found for use of prismatic glasses and favourable positioning in reducing upper limb pain. Weak, inconsistent or no evidence was found for all other ergonomics interventions in reducing upper limb pain and dysfunction and increasing productivity. The lack of high quality research, particularly in sonographers and in the outcome of productivity, should be addressed. Practitioner summary: This systematic review investigates the effectiveness of ergonomics interventions on upper limb pain, dysfunction and productivity in sonographers, dentists and surgeons. Instigation of microbreaks during long duration procedures and the use of wider, lighter instrument handles were most effective in reducing upper limb work-related pain. Abbreviations: ANOVA: analysis of variance; CLS: conventional laparoscopic surgery; DMAIC: define, measure, analyze, improve and control; GRADE: grading of recommendations, assessment, development and evaluations; HD: high definition; PRISMA: preferred reporting items for systematic reviews and meta-analyses; PROSPERO: The International Prospective Register of Systematic Reviews; RCT: randomised control trial; SILS: single incision laparoscopic surgery; VITOM: video telescopic operative microscope; WNSWLHD: Western New South Wales Local Health District; WMSD: work related musculoskeletal disorder.
- Published
- 2021
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48. Robust deep learning classification of adamantinomatous craniopharyngioma from limited preoperative radiographic images.
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Prince EW, Whelan R, Mirsky DM, Stence N, Staulcup S, Klimo P, Anderson RCE, Niazi TN, Grant G, Souweidane M, Johnston JM, Jackson EM, Limbrick DD Jr, Smith A, Drapeau A, Chern JJ, Kilburn L, Ginn K, Naftel R, Dudley R, Tyler-Kabara E, Jallo G, Handler MH, Jones K, Donson AM, Foreman NK, and Hankinson TC
- Subjects
- Algorithms, Humans, Models, Theoretical, Neural Networks, Computer, Preoperative Period, Brain Neoplasms diagnostic imaging, Craniopharyngioma diagnostic imaging, Deep Learning, Diagnosis, Computer-Assisted methods, Image Processing, Computer-Assisted methods, Magnetic Resonance Imaging methods, Tomography, X-Ray Computed methods
- Abstract
Deep learning (DL) is a widely applied mathematical modeling technique. Classically, DL models utilize large volumes of training data, which are not available in many healthcare contexts. For patients with brain tumors, non-invasive diagnosis would represent a substantial clinical advance, potentially sparing patients from the risks associated with surgical intervention on the brain. Such an approach will depend upon highly accurate models built using the limited datasets that are available. Herein, we present a novel genetic algorithm (GA) that identifies optimal architecture parameters using feature embeddings from state-of-the-art image classification networks to identify the pediatric brain tumor, adamantinomatous craniopharyngioma (ACP). We optimized classification models for preoperative Computed Tomography (CT), Magnetic Resonance Imaging (MRI), and combined CT and MRI datasets with demonstrated test accuracies of 85.3%, 83.3%, and 87.8%, respectively. Notably, our GA improved baseline model performance by up to 38%. This work advances DL and its applications within healthcare by identifying optimized networks in small-scale data contexts. The proposed system is easily implementable and scalable for non-invasive computer-aided diagnosis, even for uncommon diseases.
- Published
- 2020
- Full Text
- View/download PDF
49. Transcriptional analyses of adult and pediatric adamantinomatous craniopharyngioma reveals similar expression signatures regarding potential therapeutic targets.
- Author
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Prince E, Whelan R, Donson A, Staulcup S, Hengartner A, Vijmasi T, Agwu C, Lillehei KO, Foreman NK, Johnston JM, Massimi L, Anderson RCE, Souweidane MM, Naftel RP, Limbrick DD, Grant G, Niazi TN, Dudley R, Kilburn L, Jackson EM, Jallo GI, Ginn K, Smith A, Chern JJ, Lee A, Drapeau A, Krieger MD, Handler MH, and Hankinson TC
- Subjects
- Adult, Child, Computational Biology, Gene Expression Profiling, Humans, Middle Aged, Craniopharyngioma genetics, Craniopharyngioma therapy, Pituitary Neoplasms genetics, Pituitary Neoplasms therapy, Transcriptome
- Abstract
Adamantinomatous craniopharyngioma (ACP) is a biologically benign but clinically aggressive lesion that has a significant impact on quality of life. The incidence of the disease has a bimodal distribution, with peaks occurring in children and older adults. Our group previously published the results of a transcriptome analysis of pediatric ACPs that identified several genes that were consistently overexpressed relative to other pediatric brain tumors and normal tissue. We now present the results of a transcriptome analysis comparing pediatric to adult ACP to identify biological differences between these groups that may provide novel therapeutic insights or support the assertion that potential therapies identified through the study of pediatric ACP may also have a role in adult ACP. Using our compiled transcriptome dataset of 27 pediatric and 9 adult ACPs, obtained through the Advancing Treatment for Pediatric Craniopharyngioma Consortium, we interrogated potential age-related transcriptional differences using several rigorous mathematical analyses. These included: canonical differential expression analysis; divisive, agglomerative, and probabilistic based hierarchical clustering; information theory based characterizations; and the deep learning approach, HD Spot. Our work indicates that there is no therapeutically relevant difference in ACP gene expression based on age. As such, potential therapeutic targets identified in pediatric ACP are also likely to have relvance for adult patients.
- Published
- 2020
- Full Text
- View/download PDF
50. Role of the kinetic chain in shoulder rehabilitation: does incorporating the trunk and lower limb into shoulder exercise regimes influence shoulder muscle recruitment patterns? Systematic review of electromyography studies.
- Author
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Richardson E, Lewis JS, Gibson J, Morgan C, Halaki M, Ginn K, and Yeowell G
- Abstract
Objective: To investigate the influence of trunk and lower limb motion on electromyography (EMG) muscle activity and recruitment patterns around the shoulder., Design: Systematic review., Data Sources: MEDLINE, CINAHL, PEDro, AMED, PubMed, Cochrane Central Register of Controlled trials, Cochrane Database of Systematic reviews, SportsDiscuss and PROSPERO., Eligibility Criteria: Studies investigating both multiregional kinetic chain (KC) shoulder exercises and localised non-kinetic chain (nKC) shoulder exercises in healthy subjects under the same experimental conditions were included in this review., Results: KC exercises produced greater EMG activation levels in 5 of 11 studies for the lower trapezius. Of the remaining studies, five found no difference between the exercise types and one favoured nKC exercises. KC exercises produced greater EMG activation levels in 5 of 11 studies for the serratus anterior. Of the remaining studies, three reported the opposite and three found no significant difference between the exercise types. nKC exercises produced greater EMG activation in infraspinatus in three of four studies. KC exercises produced the lowest trapezius muscle ratios in all studies. Studies investigating the upper trapezius, middle trapezius, supraspinatus, subscapularis, biceps brachii, latifissimus dorsi, pectoralis major, deltoid, and trapezius and serratus anterior ratios showed inconsistency., Conclusion: This review found evidence that integrating the KC during shoulder rehabilitation may increase axioscapular muscle recruitment, produce lower trapezius muscle ratios and reduce the demands on the rotator cuff. Stepping appears preferable to squatting., Prospero Registration Number: CRD42015032557, 2015., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2020
- Full Text
- View/download PDF
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