A Case of Subutalar Dislocation.

Subtalar dislocation is rare injury. The incidence has been estimated to be about 1% of all traumatic dislocations. We have experienced a case of the lateral subtalar dislocation. The patient was a 30-year-old male, a Self-Defense Force member. He caught another member who fell a few meters and was resulted from forceful eversion of the foot. X-ray showed a lateral subtalar dislocation with a fracture of the lateral malleolus of ankle. He was treated by closed reduction under intravenous anesthesia immediately and it was successful. After one week, osteosynthesis was performed for the fracture and three weeks after the operation a cast was applied. The period of nonweight bearing was six weeks and full weight bearing started eight weeks after the reduction. At four months after the injury, there were no severe complications in his daily activity and avasucular necrosis of the talus in X-ray and magnetic resonance imaging.