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Copyright of Cirugía y Cirujanos is the property of Publicidad Permanyer SLU and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cirugía y Cirujanos is the property of Publicidad Permanyer SLU and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cirugía y Cirujanos is the property of Publicidad Permanyer SLU and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Anestesiología is the property of Colegio Mexicano de Anestesiologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Anestesiología is the property of Colegio Mexicano de Anestesiologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Bone neoplasms are usually misdiagnosed causing a delay in their treatment. Bone neoplasms are usually confused with tendinitis, 31% of the cases corresponds to osteosarcomas and in 21% to Ewing's sarcomas., Objective: To create a clinical-radiographic instrument of high diagnostic suspicion of knee bone neoplasms to prevent a delay in diagnosis., Method: A clinimetric study (sensitivity, consistency and validity) was performed in the bone tumor service, Hospital de Ortopedia de la Unidad Médica de Alta Especialidad Dr. Victorio de la Fuente Narváez, Instituto Mexicano del Seguro Social, in México City., Results: Characteristics of 153 patients were collected. For the sensitivity phase, 3 domains (signs, symptoms, and radiology) and 12 items were included. Consistency was evaluated with ICC (0.944), 95%CI (0.865-0.977), p < 0.001 and a-Cronbach (0.863). Index obtained a sensitivity of 0.80 and a specificity of 0.882 were obtained. The positive predictive value of the test was 66.6% and the negative predictive value was 93.75%. The positive likelihood ratio was 6.8 and the negative likelihood ratio was 0.2. Validity was evaluated using r-Pearson (0.894; p < 0.001)., Conclusions: A high suspicion clinical-radiographic index was designed to detect malignant knee tumors with adequate sensitivity, specificity, appearance, content, criteria, and construct validity., (Copyright: © 2023 Permanyer.)

Background: 10% of > 55-year-old adults suffer some kind of non-neoplastic knee pain and 75% of the musculoskeletal neoplastic disease develops in the knee., Objective: to identify clinical characteristics of knee pain in neoplastic knee pathology., Methods: after appropriate authorization of the Local Committee of Investigation and under informed consent, we made a crosssectional and a risk analysis study. We included 160 patients who were seeking medical help due to knee pain. They answered a standardized questionnaire relating to the characteristics of their pain symptomatology. Data were integrated into two groups with knee pain; a) neoplasic (cases, n = 65), b) non-neoplasic (controls, n = 95) and analyzed (SPSS v.15™). We used homogeneity tests between groups (p > 0.05); inferential analysis (Student t test, χ(2)) and risk assessment (OR), p ≤ 0.05, (CI 95%), Statistical power was > 0.80., Results: female gender predominated (55%); age was 40.3 ± 19.6 years. The most prevalent diagnoses were knee osteoarthritis 37% for non-neoplasic group; giant cell tumor 10% for benign neoplasic group and osteosarcoma 6.1% for neoplasic malignant group. Knee pain lasting < 4 months (OR 7.6; CI 95% 3.48-16.5) and severe intensity (OR 5.7; CI 95% 2.82-11.64), constant pain (OR 2.9; CI 95% 1.37-6.36), rapidly progressive fluctuation (OR 31; CI 95% 7.01-137) and nocturnal predominance (OR 7.72; CI 95% 3.2-18.5) were characteristics of neoplasic knee pain., Conclusions: the neoplasic knee pain was characterized for a rapid onset, severe and constant pain, progressive, fluctuation and predominantly by night-time.