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536 results on '"Luhmann, Scott J"'

12. Lengthening Behavior of Magnetically Controlled Growing Rods in Early-Onset Scoliosis: A Multicenter Study

Author

Heyer, Jessica H., Anari, Jason B., Baldwin, Keith D., Mitchell, Stuart L., Luhmann, Scott J., Sturm, Peter F., Flynn, John M., Cahill, Patrick J., Abdulfattah Abdullah, Abdullah Saad, Ahn, Edward, Akbarnia, Behrooz, Akoto, Harry, Albanese, Stephen, Anari, Jason, Anderson, John, Anderson, Richard, Andras, Lindsay, Bauer, Jennifer, Bellaire, Laura, Betz, Randy, Birch, Craig, Blakemore, Laurel, Boachie-Adjei, Oheneba, Bonfield, Chris, Bouton, Daniel, Brassard, Felix, Brockmeyer, Douglas, Brooks, Jaysson, Bumpass, David, Cahill, Pat, Chemaly, Olivier, Cheung, Jason, Cheung, Kenneth, Cho, Robert, Christman, Tyler, Beauchamp, Eduardo Colom, Couture, Daniel, Crawford, Haemish, Crawford, Alvin, Dahl, Benny, Demirkiran, Gokhan, Devito, Dennis, Diab, Mohammad, El Sebaie, Hazem, El-Hawary, Ron, Emans, John, Erickson, Mark, Fabregas, Jorge, Farley, Frances, Farrington, David, Fedorak, Graham, Fitzgerald, Ryan, Fletcher, Nicholas, Floccari, Lorena, Flynn, Jack, Gabos, Peter, Gardner, Adrian, Garg, Sumeet, Gerow, Frank, Glotzbecker, Michael, Gomez, Jaime, Gonda, David, Guillaume, Tenner, Gupta, Purnendu, Halvorson, Kyle, Hammerberg, Kim, Hardesty, Christina, Hedequist, Daniel, Heffernan, Michael, Heflin, John, Helenius, Ilkka, Herrera, Jose, Hogue, Grant, Holt, Josh, Howard, Jason, Hresko, Michael Timothy, Hwang, Steven, Ihnow, Stephanie, Ilharreborde, Brice, Illingworth, Kenneth, Jain, Viral, Jea, Andrew, Johnson, Megan, Johnston, Charles, Jones, Morgan, Karlen, Judson, Karlin, Lawrence, Katz, Danielle, Kawakami, Noriaki, Kelly, Brian, Kelly, Derek, Knapp, Raymond, Koljonen, Paul, Kwan, Kenny, Labelle, Hubert, Lark, Robert, Larson, A. Noelle, Lavelle, William, Lenke, Lawrence, Lew, Sean, Li, Gertrude, Louer, Craig, Luhmann, Scott, Mac-Thiong, Jean-Marc, Mackenzie, Stuart, MacKintosh, Erin, Mangano, Francesco, Marks, David, Marquez, Sanchez, Martin, Jonathan, Martus, Jeffrey, Matamalas, Antonia, Mayer, Oscar, McCarthy, Richard, McIntosh, Amy, McQuerry, Jessica, Mehta, Jwalant, Metz, Lionel, Miller, Daniel, Miyanji, Firoz, Mundis, Greg, Murphy, Josh, Murphy, Robert, Myung, Karen, Nelson, Susan, Newton, Peter, Ede, Matthew Newton, Nguyen, Cynthia, Nunez, Susana, Oetgen, Matthew, Oswald, Timothy, Ouellet, Jean, Pahys, Josh, Palomino, Kathryn, Parent, Stefan, Garcia, Alejandro Peiro, Pellise, Ferran, Perra, Joseph, Phillips, Jonathan, Pizones, Javier, Poon, Selina, Price, Nigel, Ramirez-Lluch, Norman, Ramo, Brandon, Redding, Gregory, Ritzman, Todd, Rodriguez, Luis, Rodriguez-Olaverri, Juan Carlos, Roye, David, Roye, Benjamin, Saiman, Lisa, Samdani, Amer, Perez-Grueso, Francisco Sanchez, Sanders, James, Sawyer, Jeffrey, Sayama, Christina, Schmitz, Michael, Schulz, Jacob, Schwend, Richard, Shah, Suken, Shapiro, Jay, Shufflebarger, Harry, Skaggs, David, Smit, Kevin, Smith, John, Snyder, Brian, Sponseller, Paul, Stephen, George, Stone, Joe, Sturm, Peter, Sukkarieh, Hamdi, Swarup, Ishaan, Szczodry, Michal, Thometz, John, Thompson, George, Tomoko, Tanaka, Truong, Walter, Vialle, Raphael, Vitale, Michael, Vorhies, John, Wall, Eric, Wang, Shengru, Warner, Bill, Weinstein, Stuart, Welborn, Michelle, White, Klane, Wrubel, David, Wu, Nan, Yankey, Kwadwo, Yaszay, Burt, Yazici, Muharrem, and Zhang, Terry Jianguo

Published
2022
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26. Proximal anchor fixation in magnetically controlled growing rods (MCGR): preliminary 2-year results of the impact of anchor location and density

Author

Meza, Blake C., Shah, Suken A., Vitale, Michael G., Sturm, Peter F., Luhmann, Scott J., and Anari, Jason B.

Abstract

Study design: Multicenter, retrospective cohort study. Objectives: Analyze the impact of MCGR proximal anchor location and density on radiographic outcomes and complications. Summary of background data: Magnetically controlled growing rods (MCGRs) reduce the need for repeat operations for lengthening when treating spinal deformity in children. The evidence behind choosing the location and density of proximal anchors comes from the traditional growing rod and rib-based distraction technique literature. Thus, there is much debate regarding the optimal quantity and location of proximal anchors. Methods: This study included early-onset scoliosis patients treated with MCGR with a minimum 2-year follow-up. Comparisons of 2-year correction in the coronal and sagittal planes, complication rates, and patient-reported outcomes were made based on proximal fixation type, proximal anchor density, and type of case (primary, conversion). Results: This study included 155 MCGR patients. Spinal deformity correction at 2 years was significantly higher in spine-based than rib-based constructs, in terms of both the major (23.9° vs. 17.1°, p= 0.05) and minor curves (10.0° vs. 4.5°, p= 0.03). Greater proximal anchor density, regardless of location, was also associated with better major curve correction at 2 years (25.0° vs. 18.2°, p< 0.05). There was a trend towards higher risk of device migration with rib-based fixation (13.8% vs. 4.1%, p= 0.06) and rod breakage with spine-based fixation (10.3% vs. 3.4%, p= 0.21). Having 5+ proximal anchors did not significantly decrease the risk of complication, including device migration (8.4% vs. 7.7%). Conclusions: When using the MCGR, proximal spine anchors and greater anchor density impart superior deformity correction but do not significantly impact the risk of device complications. Although rib-based constructs afford less rigidity than spine-based constructs, there is a similar risk of rod breakage and device migration. This study suggests that having 5+ MCGR proximal anchors does not protect against proximal anchor complication. Level of evidence: Level III-therapeutic.

Published
2024
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27. The value of preoperative labs in identifying “at-risk” patients for developing surgical site infections after pediatric neuromuscular spine deformity surgery

Author

Furdock, Ryan and Luhmann, Scott J.

Abstract

Study design: This is a retrospective cohort study via a single surgeon, two-hospital database. Objective: PSF in NMS patients is a high-risk surgery, with rates of SSI up to 24%. There is conflicting evidence in the literature regarding a possible association between low preoperative nutritional lab values and heightened risk of SSI after PSF. Summary of background data: A retrospective analysis of a 20-year cohort of 111 pediatric neuromuscular scoliosis (NMS) patients that underwent posterior spinal fusion (PSF) with instrumentation was performed. Overall, seven patients (6.3%) developed a postoperative surgical site infection (SSI). With the possible exception of transferrin, low preoperative lab values (prealbumin, Hgb/Hct, WBC, TLC, total protein, albumin) were not associated with SSI. These findings question the utility of the current methodology of preoperative laboratory evaluation in identifying patients at elevated risk for SSI following PSF. Methods: A single-surgeon, two-hospital database was reviewed to identify all patients who underwent PSF for NMS. Diagnoses included cerebral palsy (n?=?82), myelomeningocele (n?=?13), spinal muscular atrophy (n?=?4), and other (n?=?12). Medical records for 117 patients were examined; 6 were excluded due to missing lab values. SSI was defined as an infection necessitating a return to the operating room for irrigation and debridement of the surgical site. Demographic information, preoperative lab values, spinal deformity magnitude, and surgical procedure data were recorded. Results: There were 50 males and 61 females with a mean age of 14 years and 2.5 months (8–20 years). Seven patients (6.3%) experienced postoperative SSI. SSI rate for PSF to pelvis was 7.7% vs. PSF to lumbar spine, 3.0% (NS; p?=?0.672). Length of PSF was not statistically associated with SSI (p?=?0.172). SSI due to gram positives and polymicrobial gram negatives occurred with equal incidence. Preoperative lab values of transferrin, prealbumin, albumin, WBC count, total lymphocyte count, and total protein were not associated with SSI. Patients with postoperative SSI had higher mean Hct compared to controls (p?=?0.041). While 40.6% of controls had low Hgb (<?13.8 g/dl), all patients who developed SSI had Hgb within the normal range (p?=?0.043). Similarly, while 37.6% of controls had low Hct (<?40.7%), all patients who developed SSI had Hct within the normal range (p?=?0.05). Conclusion: Low preoperative nutritional labs, Hgb/Hct, and TLC values were not found to be associated with an increased incidence of SSI in this analysis. These findings question the utility of preoperative lab values in identifying “at-risk” populations for SSI after PSF for NMS. Level of evidence: IV Therapeutic.

Published
2024
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38. Best Practices in Intraoperative Neuromonitoring in Spine Deformity Surgery: Development of an Intraoperative Checklist to Optimize Response

Author

Vitale, Michael G., Skaggs, David L., Pace, Gregory I., Wright, Margaret L., Matsumoto, Hiroko, Anderson, Richard C.E., Brockmeyer, Douglas L., Dormans, John P., Emans, John B., Erickson, Mark A., Flynn, John M., Glotzbecker, Michael P., Ibrahim, Kamal N., Lewis, Stephen J., Luhmann, Scott J., Mendiratta, Anil, Richards, B. Stephens, III, Sanders, James O., Shah, Suken A., Smith, John T., Song, Kit M., Sponseller, Paul D., Sucato, Daniel J., Roye, David P., and Lenke, Lawrence G.

Published
2014
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