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[Medial wedged proximal tibial osteotomy for treating osteoarthritis of knee]
Hui-min Wang1, Ming-sheng Tan, Zi-rong Li
1Department of Orthopedics, China-Japan Friendship Hospital, Beijing, P.R. China 100029.
Objective:
To assess the efficacy of medial wedged proximal tibial osteotomy for treating knee osteoarthritis with varus deformity.
Methods:
From July 1996 to September 1999, 19 patients with knee osteoarthritis accompanied by varus deformity were treated by medial wedged proximal tibial osteotomy combined with internal fixation. Full-length anterior-posterior radiographs were taken preoperatively, 8 weeks and 2 years postoperatively. The parameters including the femorotibial angle, the tibial angle, the femoral angle, the femoral condyle-tibial plateau angle, and the medial joint space, were measured from these radiographs. The function of knee was evaluated according to the 100-point rating scale standard of knee.
Results:
The mean postoperative score had been significantly improved from 48.6 +/- 16.6 points to 81.7 +/- 14.8 points after 2 years of operation. The medial joint space had been increased from 2.2 +/- 1.6 mm to 4.9 +/- 1.5 mm and the femoral condyle-tibial angle had been decreased from 7.4 degrees +/- 3.1 degrees to 1.7 degrees +/- 3.1 degrees. There were complications in 3 cases: 2 cases of superficial wound infections and 1 case of intra-articular fracture. There were no delayed union and recurrence of varus deformity.
Conclusion:
Medial wedged proximal tibial osteotomy combined with internal fixation provides an efficacious approach to treat knee osteoarthritis with varus deformity.
