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The Peroneus Quartus Muscle in a Locking Phenomenon of the Ankle: A Case Report
Kim T M Opdam1, Pim A D van Dijk1, Sjoerd A S Stufkens2
1PhD Candidate, Department of Orthopaedic Surgery and Orthopaedic Research Center Amsterdam (ORCA), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Academic Center for Evidence-Based Sports Medicine (ACES), Amsterdam, The Netherlands; Amsterdam Collaboration on Health and Safety in Sports (ACHSS), Amsterdam, The Netherlands.
Abstract:
We present the case of a 64-year-old female who was referred to us with an unexplained clicking and locking phenomenon of the right ankle. The magnetic resonance imaging findings suggested a longitudinal tear of the peroneus brevis tendon. During tendoscopy, not only was a Raikin type B intrasheath tendon subluxation visible, but also a peroneus quartus muscle. The peroneus brevis tear was tubularized and the peroneus quartus muscle resected, which resolved the patient's complaints.
