Rotational acetabular osteotomy with a resection of the lateral edge of the acetabulum for the treatment of advanced coxarthrosis.
BACKGROUND
We compared the functional and radiological results of a rotational acetabular osteotomy (RAO) with and without a resection of the lateral edge of the acetabulum. The purpose of the resection was to obtain good joint congruency.


METHODS
RAO was performed on 71 hips to treat advanced coxarthrosis caused by acetabular dysplasia. RAO without a resection (non-resection group) was performed in 54 patients (57 hips) with a median age of 43.1 years. The remaining 14 patients (14 hips), who had a median age of 44.6 years, received RAO with a resection of the lateral edge of the acetabulum (resection group).


RESULTS
The average postoperative total hip joint score was better than the average preoperative score in the non-resection group (P < 0.001), but not in the resection group. In the resection group, all hips displayed progressive osteoarthritic change and ten hips had chondrolysis of the hip joint and a collapse of the transferred acetabulum within 3 years. In the non-resection group, 15 hips showed progressive osteoarthritic change, 24 hips had no change, and 18 hips showed a decrease in the osteoarthritic stage.


CONCLUSIONS
Our findings demonstrated that resection of the lateral edge of the acetabulum is not a useful adjunct to the RAO procedure for the treatment of advanced coxarthrosis.
Okano
K
K
Department of Orthopaedic Surgery, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan. kuni@nagasaki-u.ac.jp
Enomoto
H
H
Osaki
M
M
Shindo
H
H
D000077:Acetabulum / Q000473:pathology / Q000601:surgery*; D000328:Adult; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D012189:Retrospective Studies; D012399:Rotation