Fig. 1

The male case, 57 years old, with left talus necrosis after internal fixation of fracture and dislocation, was treated with TTCA. a Preoperative CT showed avasculanecrosis of talus dislocation with old fracture and internal fixation. b Through the lateral incision, tibiotalar and subtalar joint were exposed after fibular was cut 7-8 cm above the distal fibula. c Postoperative X-ray. d X-ray 12 months after operation. e Left ankle shows obvious inversion deformity before operation. f Left ankle shows nearly normal 12 months after operation