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Case Reports in Orthopedics
Volume 2017, Article ID 4854812, 4 pages
https://doi.org/10.1155/2017/4854812
Case Report

Recalcitrant Lateral Premalleolar Bursitis of the Ankle Associated with Lateral Ankle Instability

Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan

Correspondence should be addressed to Takumi Matsumoto; pj.ca.nimu@ykt-tomutam

Received 24 May 2017; Accepted 9 July 2017; Published 3 August 2017

Academic Editor: Koichi Sairyo

Copyright © 2017 Masashi Naito et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Lateral premalleolar bursitis of the ankle is a rarely reported disorder in the English literature although it is not uncommon in Asian countries where people commonly sit on their feet. Here, we present the case of a 66-year-old woman with recalcitrant lateral premalleolar bursitis associated with lateral ankle instability which was successfully treated with surgical resection of the bursa and repair of the anterior talofibular ligament. Operative findings revealed a communication between the bursa and articular cavity of the ankle joint via the sheath of the extensor digitorum longus tendon, which was considered to act as a check valve leading to a large and recalcitrant bursitis. This report provides a novel concept about the etiology of recalcitrant lateral premalleolar bursitis of the ankle.