Abstract: Objective:To study the effect of the bidirectional,barbed,absorbable suture in the closure of extremity wound.Method:37 patients (25 males and 12 females) suffering acute or chronic injury in extremity were treated with no-tension suture with the bidirectional,barbed,absorbable thread.The extremity wound was closed in one-stage operation.Their age ranged from 4 to 72,with an average of 34.The causes of the injury varied.There were traffic accidence in 19 cases,machine crush injury in 10 cases,heavy crush injury in 4 cases,infection in 3 cases and knife incision in 1 case.The acute wounds were 26 cases and the chronic wounds were 11 cases.The wound healing progress was observed.Subjective and objective assessment on the wound were done at the sixth month post-operation,including Visual Analogue Score and Vancouver Scar Scale.Result:All the patients were followed up for 6~19 months after operation,with an average of 10 months.The wound healed after one time suture in 35 cases,and the sutures were taken out in 15~25 days,with average of 20 days.In 2 cases the wound needed a second operation.All the wounds healed perfectly.The direct healing rate reached 97.3%,the rate of one-time closing was 94.6%,and the infection rate was 5.4%.the pain average scare was 1.7(0~5),the cosmetic average score was 2.9(0~8),and Vancouver Scar average scare was 2.4(1~8).Conclusion:No-tension suture with the bidirectional,barbed,absorbable thread can close wounds one time.It significantly decreased the possibility of skin necrosis,secondary suture,skin graft and flap transfer.It also reduced the time of operation and shortened the disease course.