Total hip arthroplasty (THA) for high positioned dislocated hips was performed on six cases. All patients were women. The mean patient age was 55.0 years (range; 37 to 68).
Attempts were made to correct the leg-length discrepancy to an appropriate length in each case. The greatest lengthening was 45mm (12.5% femoral lengthening) in the series reported. There were no major complications with severe nerve palsy due to overlengthening of the femur, but a patient with 40mm (10.4%) femoral lengthening complained of numbness in the lateral sural cutaneous nerve area.
We consider that the appropriate leg-lengthening should be within 10% of femoral lengthening.
