title: Peroneus quartus and peroneal tendoscopy.
abstract: This is a report of a case of peroneal subluxation caused by peroneus quartus, a supernumerary muscle in the peroneal muscle group. Peroneus quartus' anatomy and its clinical relevance in lateral ankle pain, swelling and peroneal subluxation are described. It may be accurately diagnosed by peroneal tendoscopy. The technical note of this procedure is also described.
authors.affiliation: Department of Orthopaedic Surgery, University Malaya Medical Centre, 50603 Kuala Lumpur, Malaysia.
authors.forename: C K
authors.initials: CK
authors.lastname: Yong
mesh_terms: D000328:Adult; D000843:Ankle Joint; D001182:Arthroscopy / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D013710:Tendons / Q000473:pathology / Q000601:surgery*