外傷性距骨下脱臼の2症例

抄録

Subtalar dislocation of the foot is an uncommon injury involving simultaneous dislocation of the talonavicular and talocalcaneal joint. Smith found only seven cases (1.3%) in a review of 535 consecutive dislocations of all types, and Leitner found 42 cases (1%) among 4215 dislocations.
Two cases of subtalar dislocations are reported.
Casel: A 55-year-old man with medial subtalar dislocation was treated by closed reduction under general anesthesia. At 4 years and 8 months after injury, the patient had no complaint in his foot, and roentgenograms could not confirm avascular necrosis of the talus, however, it confirmed osteoarthritic changes of the talocalcaneal joint.
Case2: A 17-year-old man with laterl subtalar dislocation associated with large osteochondral fracture of the talus was treated by closed reduction using a wire-traction method under spinal anesthesia. At 1 year and 6 months after injury, roentgenograms confirmed solid union of talus fracture, and that avascular necrosis of the talus had not occurred. The patient could run fast, and he had no complaint in his daily activity.