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[Triple osteotomy (modified Tönnis method) for advanced coxarthrosis]
Nihon Seikeigeka Gakkai Zasshi
|December 1, 1995
Summary
Triple osteotomy using a modified Tönnis method significantly improved hip function in advanced coxarthrosis patients. Postoperative results showed a notable increase in the Japanese Orthopaedic Association Hip Score and favorable radiographic outcomes.
Area of Science:
- Orthopedic Surgery
- Hip Reconstruction
- Joint Preservation
Background:
- Advanced coxarthrosis presents significant challenges in hip joint management.
- Acetabular rotational osteotomy is a surgical option for hip joint preservation.
Purpose of the Study:
- To evaluate the clinical and radiological outcomes of triple osteotomy (modified Tönnis method) for advanced coxarthrosis.
- To assess the effectiveness of this surgical technique in improving hip function and joint congruity.
Main Methods:
- Retrospective evaluation of 79 triple osteotomies (modified Tönnis method) in 76 patients.
- Surgical technique involved a modified Tönnis approach with acetabular rotation and fixation.
- Clinical assessment using the Japanese Orthopaedic Association Hip Score and radiological evaluation including the CE angle.
Main Results:
- Significant improvement in the Japanese Orthopaedic Association Hip Score from 68 to 90 points.
- Radiological evaluation showed 46% excellent, 44% fair, and 10% poor results regarding joint space and congruity.
- A postoperative CE angle greater than 40 degrees correlated with good remodeling and favorable outcomes.
Conclusions:
- Triple osteotomy using the modified Tönnis method is an effective surgical procedure for advanced coxarthrosis.
- The technique leads to significant functional improvement and positive radiographic changes, particularly when achieving a postoperative CE angle > 40 degrees.