Abstract
Purpose
This study is to evaluate chinical and radiological results of open wedge high tibial osteotomy using Aescula® plate.
Materials and Methods
Ninity one patients who have unicompartmental osteoarthritis with varus deformity were treated by open wedge high tibial osteotomy with Aescula® plate and followed up at least 2 years. Clinically, visual analogue scale (VAS), range of motion (ROM) and hospital for special surgery (HSS) score were evaluated. Radiologically, tibio-femoral angle, mechanical axis, medial proximal tibia angle and posterior slope were measured. All complications were also evaluated.
Results
During the follow-up VAS improved from 8.3 to 2.1, ROM were checked preoperatively from 1.3° to 137° and from 1.8° to 136.1° at last follow up. And HSS score improved from 76.8 to 91. Preoperative tibio-femoral angle was 0.4° of varus, mechanical axis 6.4° of varus, medial proximal tibia angle 84.4° and posterior slope 9.3°. Radiologic results at last follow up revealed significant improvements by 8.3° of valgus for tibio-femoral angle, 1.8° of valgus for mechanical axis and 90.1° for medial proximal tibia angle. Mean posterior slope was 10.4° which increased 1.1° compared with preoperative one. And there was one fixation failure that needed re-operation.
Figures and Tables
Fig. 2
A comparision of tibial open wedge osteotomy. (A) Preoperative anteroposterior view with tibiofemoral angle. (B) Preoperative lateral view with posterior angle. (C) Teleoroentgenography with mechanical axis. (D) Postoperative antero-posterior view with tibiofemoral angle. (E) Postoperative lateral view with posterior angle. (F) Postoperative teleoroentgenography with mechanical axis.
![jkoa-44-336-g002](/upload/SynapseData/ArticleImage/0043jkoa/jkoa-44-336-g002.jpg)
Fig. 3
A procedure of high tibial open wedge osteotomy. (A) Skin incision below medial joint line. (B) Pes anserius tendon is identified and incised with Z-plasty fasion. (C) Identification of anterior border of medial collateral ligament. (D) Guide wire insertion under the fluoroscopy. (E) Osteotomy is performed along guider wire. (F) Gap measeurement and plate fixatioin.
![jkoa-44-336-g003](/upload/SynapseData/ArticleImage/0043jkoa/jkoa-44-336-g003.jpg)
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