Total hip arthroplasty after previous rotational acetabular osteotomy
Takahito Yuasa1, Katsuhiko Maezawa, Masahiko Nozawa
1Department of Orthopaedic Surgery, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan, tyuasa@juntendo.ac.jp.
Summary
Total hip arthroplasty after rotational acetabular osteotomy (RAO) shows similar midterm outcomes to other dysplastic hips. Rotational acetabular osteotomy does not appear to negatively impact clinical or radiographic results in the midterm.
Area of Science:
- Orthopedic Surgery
- Hip Reconstruction
- Joint Preservation
Background:
- Rotational acetabular osteotomy (RAO) is a joint-preserving procedure to enhance femoral head coverage.
- Advanced coxarthrosis often necessitates more radical surgical interventions.
- Understanding outcomes after progression post-RAO is crucial for treatment planning.
Purpose of the Study:
- To evaluate the clinical outcomes of total hip arthroplasty (THA) in patients who developed coxarthrosis progression after RAO.
- To compare THA outcomes in hips previously treated with RAO versus primary THA in dysplastic hips.
Main Methods:
- A retrospective comparison of 24 THAs in dysplastic hips post-RAO (RAO group) against 24 primary THAs in a matched control group.
- Average follow-up of 85 months (range 15-195 months).
Main Results:
- The RAO group experienced longer operative times and greater intraoperative blood loss.
- No significant differences were observed in Harris Hip Score or radiographic outcomes between the groups.
- Revision rates were similar, with four revisions in the RAO group and one in the control group (p=0.165).
Conclusions:
- Total hip arthroplasty following RAO yields midterm clinical results comparable to other dysplastic hips.
- RAO does not seem to compromise midterm clinical and radiographic outcomes for subsequent THA.
