Objective To observe the long-term effectiveness of tendon allograft to repair tendon defect.Methods Between October 1996 and September 1999,24 patients with tendon defect were treated with tendon allograft which was cultured with deoxyguanosine and preserved at low-temperature or ultra-deep-low-temperature.There were 19 males and 5 females,aged from 12 to 46 years with an average of 25.9 years.These patients included 7 cases of total extensor tendon defect of 2nd-5th fingers,7 cases of index finger extenso...