Objective To study the result of total ankle replacement in treating ankle disorders. Methods Total ankle replacement was employed to treat 18 cases (18 ankles) with ankle disorders including ankle osteoarthritis in six, traumatic arthritis in nine, local necrosis of the talus in two and post ankle arthrodesis in one. Results The follow up averaged three years and nine months (1-5 years). The ankle functions were evaluated with Kofoed's system that showed excellent result in 16 cases and good in 2. The foot dorsiflexion was 6?-12? and plantoflexion 8?-16?. Movement range of the foot dorsiflexion and plantoflexion was 11?-23?. The implication was the skin necrosis of incise bordger. No foot inversion, eversion and radiographic loosen were seen. Conclusion Total ankle replacement is a good method for improvement of the ankle function.