Preoperative diagnoses included osteoarthritis in 14, rheumatoid arthritis in 3, tuberculosis in 1, avascular necrosis of talus in 3, and 4 equinus deformity due to miscellaneous causes.

• 这24位病患其术前的认断包括有：退化性关节炎14例，类风湿关节炎3例，结核性关节炎1例，距骨缺血性坏死3例，及4位因为各种原因所造成的马足性足变性。