Not Just Another Ankle Sprain

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Not Just Another Ankle Sprain - Page #4

Working Diagnosis: 1. Subluxed dislocated peroneal tendons. 2. Peroneus brevis tear 3. Peroneus quartus muscle Treatment: Surgical repair with the following findings: 1. No intraoperative evidence of peroneus brevis tendon tear. 2. Dislocated peroneal tendons. 3. Likely symptomatic peroneus quartus. Outcome: Successful surgical repair. Editor's Comments: While relatively uncommon, the peroneus quartus can occur in up to 10% of the population and can be an uncommon cause of lateral ankle instability. Common findings along with peroneus quartus include a longitudinal tear in the tendon of the peroneus brevis, possible peroneal tendon subluxation or dislocation or a prominent retrotrochlear eminence. A peroneus quartus may also be used for surgical reconstruction as needed. References: Athavale, S. Anatomy of the Superior Peroneal Tunnel. J Bone Joint Surg Am, 2011 Mar 16;93(6):564-571. Zammit J. The peroneus quartus muscle. Anatomy and clinical relevance. J Bone joint Surg Br. 2003 Nov; 85 (8): 1134-7. Return To The Case Studies List.		Back
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