RESUMO
METHODS: Survivorship analysis was performed up to 13 years after intertrochanteric femoral osteotomies in 136 dysplastic hip joints with osteoarthritis. Varus-valgus and rotational osteotomies were evaluated. The criterium limiting survival was the recurrence of pain postoperatively. RESULTS: Joints with severely pathological Sharp Angles (> 48 degrees) showed a diminution within 10 years to 50%. Moderately pathological joints (< 49 degrees) needed 13 years to diminish to 50%. 3 groups of the CE angle showed a similar picture with somewhat more difference between the groups, but not statistically significant during this time. This was different when evaluating the 3 grades of arthrosis. Joints with grade 1 were free of pain after 13 years in only 51.2%, joints of grade 2 already after 10 years in only 37% (p < 0.05). The final values of grade 3 joints were found after only 5 years. This demonstrates that varus osteotomy is only of limited value in dysplastic joints with osteoarthritis. Operations correcting the acetabulum have to be compared. CONCLUSION: In 21 patients rotational osteotomies to correct external rotation contracture had a marked effect on pain in 90.4%, valgus osteotomies with rotation in 75%, varusosteotomies with rotation in 65%. Without rotation a marked reduction of pain was found in varus osteotomy in 61.6% and in valgus osteotomy in only 55%. So far, patients with diminished anteversion of the femur were not separated and treated specially. But diminished anteversion of the femur and/or acetabulum leads to osteoarthritis too.
