THE EFFECT OF SALTER-OSTEOTOMY FOR JUVENILE HIP DYSPLASIA: MUSCLE FORCES AND JOINT REACTIONS

Developmental dysplasia of the hip still requires surgical intervention in some patients. While Salterosteotomy has been reported to have good longterm clinical results, a significant percentage of patients are still reported to suffer early degenerative arthritis after this intervention [Bohm, 2002]. Several studies suggest that the biomechanical changes achieved by this osteotomy might be more influential on long-term results than the geometric correction routinely assessed in radiographs [de Kleuver, 1999; Hamada, 1989]. Therefore this study was intended to calculate muscle and joint reaction forces (JRF) dependent on the amount of correction that was achieved with different degress of offset and rotation used when performing the Salter-osteotomy.