Prevention of hip dislocation in cerebral palsy by early psoas and adductors tenotomies.

The effectiveness of psoas and adductor tenotomies for the prevention of hip dislocation was investigated in 40 hips of 24 total-body-involved children. Age at operation ranged from 1.6 to 10 years. Results were evaluated by the Reimers migration percentage (MP). Average follow-up was 3 years. An overall good result was observed in 67% of cases. Results were correlated with age and MP at operation. Successful results were obtained in 90% of patients under age 4 who had an MP less than 33%. Preventive surgery should be performed at 2 or 3 years of age, before the onset of hip dysplasia.