The movement of finger joints is realized by the corresponding tendon pulling, and the tendon pulling is realized by the corresponding muscle contraction. The symptoms of finger tendon injury can be categorized into motor dysfunction and sensory dysfunction, as follows: 1. In terms of motor function, it is manifested as limitation of flexion and extension activities. Finger trauma caused by tendon injury rupture, will limit the corresponding flexion and extension activities, flexor tendon injury can not bend the joints, extensor tendon rupture can not straighten the joints; 2, the nerve caused by flexion and extension finger tendon injury, but also affect the sensory function, manifested in the relevant parts of the sensory abnormality, numbness, tingling, burning sensation and so on.