Knee Surg Relat Res 2019 Mar; 31(1): 61-66  https://doi.org/10.5792/ksrr.18.023
Distal Femoral Medial Opening Wedge Osteotomy for Post-Traumatic, Distal Femoral Varus Deformity
Myoung-Soo Cha, MD, Si-Young Song, MD, Koo-Hyun Jung, MD, and Young-Jin Seo, MD
Department of Orthopaedic Surgery, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
Correspondence to: Young-Jin Seo, MD Department of Orthopaedic Surgery, Hallym University Dongtan Sacred Heart Hospital, 7 Keunjaebong-gil, Hwaseong 18450, Korea Tel: +82-31-8086-2410, Fax: +82-31-8086-2429 E-mail: yjseo-os@daum.net
Received: March 29, 2018; Revised: August 30, 2018; Accepted: August 31, 2018; Published online: March 1, 2019.
© Korean Knee Society. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Restoration of neutral mechanical alignment of the lower limb is an important factor in the treatment of unicompartmental arthrosis. Traditionally, medial opening wedge high tibial osteotomy has been widely performed to correct varus malalignment with unicompartmental arthrosis. However, an ideal indication for the high tibial osteotomy is the knee with metaphyseal tibial varus malalignment. The basic principle of corrective osteotomy is performing an osteotomy at the center of the deformity to prevent abnormal joint line obliquity. If pathologic distal femoral varus deformity is the cause of genu varum, the osteotomy should be performed in the distal femur. Reports of medial opening wedge distal femoral osteotomy (DFO) to correct varus malalignment are rare. We present a case of this very rare and challenging condition in a 47-year-old male, which was successfully treated by medial opening wedge DFO.
Keywords: Deformity, Varus, Osteotomy, Distal femoral, Medial opening


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