Fig. 1

A typical case of AAF group, male, 63 years, the patient had a history of repeatedly sprained the right ankle for 8 years, and the ankle was found to be arthritis for 4 years. a, b Anteroposterior and lateral X-ray film 5 days before operation, we found that the orientation of ankle mortise can be acceptable. c, d Anteroposterior and lateral X-ray film 2 days after operation, we made an arthroscopic ankle fusion by using three large cannulated screws; the joint space was filled and pressurized. e, f Anteroposterior and lateral X-ray film 3 months after operation, no obvious internal fixation loosening was observed, and a lot of bone bridges were found in the joint space, the ankle fusion was ideal