There is no definitive research data on the success rate of ankle replacement. Compared to hip and knee replacements, the number of ankle replacements is small and the success rate of replacement is unknown. Ankle replacement surgery is mainly indicated for severe ankle joint lesions, such as those caused by rheumatoid arthritis, severe traumatic arthritis, and other diseases, where the ankle joint may suffer from intractable pain, which interferes with walking and ankle joint movement. In this case, ankle replacement surgery can be used to replace the diseased joint plane, relieve joint pain and restore joint function. The success rate of ankle replacement surgery is lower than that of hip replacement surgery. The risk of surgery and fixation failure is significantly higher, and its success rate is further reduced by the shortened life span of the joint as its use increases. Therefore, in clinical practice, some doctors prefer to perform ankle fusion for treatment. Overall, the success rate of ankle replacement techniques is gradually improving as medicine continues to evolve.