The os vesalianum is an uncommon accessory bone of the foot, located proximally to the base of the fifth metatarsal. It is usually asymptomatic and detected incidentally on radiographs. This is a case of bilateral os vesalianum, symptomatic only in the right foot, in a golf player. After a failed nonoperative treatment, the os vesalianum in the symptomatic foot was excised and the peroneus brevis tendon reattached using a suture anchor. The functional outcome was excellent, and the patient returned to golf 8 weeks after surgery.
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