CASE REPORT


Subchondral Insufficiency Fracture of the Femoral Head Complicated after Total Knee Arthroplasty



Atomu Suzuki1, Takatomo Mine1, *, Koichiro Ihara1, Hiroyuki Kawamura1, Ryutaro Kuriyama1, Yasunari Tominaga1
1 Department of Orthopaedic Surgery, National Hospital Organization, Kanmon Medical Center, Shimonoseki, Yamaguchi, Japan


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Creative Commons License
© 2019 Suzuki 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, 1-1 Choufusotoura, Shimonoseki, Yamaguchi 752-8510, Japan; Tel: +81-83-241-1199; Fax: +81-83-241-1301;
E-mail: mine.takatomo.ga@mail.hosp.go.jp


Abstract

Subchondral Insufficiency Fracture (SIF) of the femoral head has been observed in elderly women with osteoporosis. We present a rare case of subchondral insufficiency fracture of the femoral head complicated after total knee arthroplasty. Histological findings suggested osteonecrosis or SIF of the femoral head. MRI characteristics were considered to be useful for the differentiation between osteonecrosis and SIF. Several pathological conditions may be related to SIF of the femoral head, but its detailed pathogenesis is still unknown.

Keywords: Subchondral insufficiency fracture, Total Knee Arthroplasty, Osteoporosis, Osteonecrosis, Pathological, Femoral.