La acetabuloplastia de Staheli en el tratamiento de la enfermedad de Legg-Calvé-Perthes en mayores de 6 años. Estudio preliminar

Résumé

Objective: To evaluate the functional and radiographic results of Staheli's acetabuloplasty as therapeutic option in the surgical treatment of Legg-Calvé-Perthes's disease of late debut. Material and method: we did a retrospective study of seven patients with Legg-Calvé-Perthes's disease treated by means of Staheli's acetabuloplasty with an average follow-up of three years and three months. We analyzed clinical parameters (preoperative and "end of the follow-up" mobility) as well as radiographic parameters (Herring's classification, Heyman-Herndon's index and Wiberg's center-edge angle) before the surgical treatment, after the surgical treatment and at the end of the follow-up. Results: Any patients presented complications due to the surgery. The physical exploration showed an average improvement of 10º in the internal rotation of the hip. After the statistical analysis of the radiographic indexes (Heyman-Herndon's index as well as Wiberg's angle), there were statistically significant differences between the preoperative X-ray and the postoperative one, but there were no statistically significant differences between the postoperative one and the X-ray done at the end of the follow-up. Therefore, the radiographic indexes showed an improvement in these parameters that in addition kept stable in time. Conclusions: The technic of acetabuloplasty according to Staheli is a surgical option that leads to a good radiographic and functional result with few complications due to the procedure.