CASE REPORT


Osteonecrosis of the Femoral Medial Condyle Due to Leg Length Discrepancy After A Traffic Accident



Wataru Kusano1, Takatomo Mine1, *, Koichiro Ihara1, Hiroyuki Kawamura1, Michio Shinohara1, Ryutaro Kuriyama1, Yasuhiro Tominaga1
1 Department of Orthopaedic Surgery, National Hospital Organization Kanmon Medical Center, Shimonoseki, Japan


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Creative Commons License
© 2020 Kusano et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Orthopaedic Surgery, National Hospital Organization Kanmon Medical Center, Shimonoseki, Japan; Tel: +81-83-241-1199; Fax: +81-83-241-1301; E-mail: mine.takatomo.ga@mail.hosp.go.jp


Abstract

Untreated leg length discrepancy can cause spontaneous osteonecrosis of the knee, which is associated with subchondral insufficiency fractures of the knee and progression or onset of osteoarthritis of the knee. Spontaneous osteonecrosis of the knee can be secondary to cartilage loss or additional subchondral changes. A 40-year-old female underwent opening-wedge high tibial osteotomy and osteochondral grafting for osteonecrosis of the femoral medial condyle and osteoarthritis of the knee caused by leg length discrepancy after a traffic accident. High tibial osteotomy and cartilage restoration are often considered for the treatment of knee osteonecrosis with cartilage damage in younger patients.

Keywords: Osteonecrosis, Osteochondral grafting, Opening-wedge, High tibial, Osteotomy, Femoral, Knee.