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KMID : 0361620130480020089
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Journal of the Korean Orthopaedic Association
2013 Volume.48 No. 2 p.89 ~ p.95
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Supramalleolar Tibial Osteotomy for Medial Compartment Ankle Osteoarthritis
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Park Jong-Tae
Eom Joon-Sang
Jung Hong-Geun
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Abstract
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Purpose: The aim of this study is to evaluate the clinical and radiologic outcomes of supramalleolar tibial osteotomy for medial compartment ankle osteoarthritis (OA) and to verify the efficacy of the supramalleolar osteotomy.
Materials and Methods: This study is based on 9 ankles of the medial compartment ankle OA treated with supramalleolar tibial osteotomy from August 2007 to June 2011 with at least 1 year follow-up. As for the functional evaluation, visual analogue scale (VAS) pain scores and American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scores were evaluated. On radiographs, tibial anterior surface (TAS) angles, tibial lateral surface angles were measured. The severity of ankle OA was classified by the Takaura staging system.
Results; The mean VAS pain scores improved to 0.6 and AOFAS scores improved to 89.3. Radiographically, TAS angle increased to 93.5° postoperatively. Seven ankles showed improvement of the ankle arthritis grading from IIIa to II according to Takakura’s staging.
Conclusion; Supramalleolar tibial osteotomy for patients with medial compartment varus ankle OA showed satisfactory clinical and radiological outcome. We confirmed that the procedure is recommendable for medial compartment varus ankle OA especially for Takakura stage IIIa.
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KEYWORD
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medial compartment ankle osteoarthritis, supramalleolar tibial osteotomy, Takakura stage
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