Abstract
Purpose
This studyevaluated the results of the acetabular medial wall osteotomy to reconstruct the acetabulum in dysplastic hip during total hip athroplasty.
Materials and Methods
A total of 30 hips of 30 patients who underwent THA between March 1999 and October 2002 were clinically and radiogically evaluated. The average age at the time of operation was 46.5 years (range: 17 to 73 years), and the mean follow-up period was 5 years (range: 5.3 to 8.7 years). 26 cases, a cementless hemispherical acetabular cup and 4 cases, reinforced ring were inserted in the true acetabulum. Only 2 hips needed structural bone graft.
Results
The average Harris hip score improved from 56.3 points preoperatively to 93.2 points at the last follow up. Radiographic analysis revealed no aseptic loosening or radiolucent line, and showed stable bony fixation at the true acetabulum. The mean thickness of the medial acetabular wall postoperative was 20.5 mm. Bone union of the medial wall observed at a mean of four months post-operatively.
Conclusion
The acetabular medial wall osteotomy can provide the integrity of acetabular medial wall while achieving enhanced acetabular coverage and more normal hip biomechanics.
