We transferred tendo-cutaneous sensory free flap for reconstruction of composite defect of dorsum of hand muscles, 16 extensor defects in 7 patients. The patients were followed up average 13 months after operation. The Total Range of Motion(TROM) was restorred 51% normal regardless of type of injury in thumb reconstructions. In digit, TROM was restorred 39 % in burn cases, but 51% in trauma cases. The difference between the two groups is statisti:;ally significant(p<0.05). Two puint discrimination was comparable to the normal. In composite defect of dorsum of hand includes tendon, early operation and early excercise after operation are essential for prevention of joint stiffness and tendon adhesion consequently, for restoration of good function.