Avaliação funcional dos pacientes portadores de sarcomas ósseos submetidos à tratamento cirúrgico utilizando a endoprótese total ou parcial, na substituição da extremidade distal do fêmur

Abstract

Objectives: Osteosarcoma and Ewing's sarcoma are the most common malignant primary bone tumors in individuals under the age of 15 years. The purpose of the study is to retrospectively compare functional outcomes of patients submitted to resection of the distal femoral end and to reconstruction with total or partial non-conventional prosthesis of the knee. Methods: We assessed 26 patients with bone sarcomas in the distal femoral end treated at the Boldrini's Children Center between 1990 and 2003. Twenty-four presented with Osteosarcoma and two had Ewing's sarcoma. The assessment system employed was the one proposed by Enneking (1987) as recognized by the Musculoskeletal Tumor Society. For the statistical analysis between the criteria and final scores, we have used the Wilcoxon's test, with an alpha error of 5%. Results: Ages ranged from 5 to 17 years, (mean: 11 years and 9 months); with prevalence being higher in females (61.5%). The only statistically significant difference found in this study was concerned to stability (p=0.0037). No statistical significance was found on any other criteria such as movement (p=0.7546), pain (p=0.4848), deformity (p=0.8695), strength (p=1.0000), functional activities (p=0.9127) and final functional outcome (p=0.5866). Conclusions: The overall functional end score did not show statistically significant differences (p=0.6027). The type of prosthesis for femoral reconstruction did not affect patients' functional outcomes.