Department of Orthopaedic Surgery CHA Bundang Medical Center CHA University Seongnam 13497 Gyeonggi-do South Korea;
Department of Orthopaedic Surgery Asan Medical Center University of Ulsan College of Medicine Seoul 05505 South Korea;
Ankle; Gout; Osteochondral lesion of the talus; Tophi; Magnetic resonance image; Arthroscope; Case report;