The resting position of the hand and the functional position of the hand are two different concepts and have different clinical significance. The resting position of the hand refers to the natural resting state of the hand, when the muscle tension of the intrinsic and extrinsic muscles of the hand is in a relative balance, i.e. half-clenched fist posture, slight dorsiflexion of the wrist joint about 10-15, and mild ulnar deviation, mild abduction of the thumb, the tip of the thumb touching the radial side of the distal interphalangeal joint of the index finger, the rest of the four fingers metacarpophalangeal joint and interphalangeal joint in a semi-flexed position, the more flexion from the index finger to the little finger to the ulnar side, the more. If the hand is injured and the flexor and extensor tendons lose their normal balance, the resting position will be changed and abnormal posture will appear, which is beneficial to the diagnosis of hand trauma. The functional position of the hand, i.e. the position where the hand can play its maximum function, is about 25~30 with the wrist joint dorsiflexed, accompanied by mild ulnar deviation, thumb abducted to the palm position, metacarpophalangeal joint and proximal interphalangeal joint semi-flexed, distal interphalangeal joint slightly flexed, this position can make the hand produce different movements such as fist clenching, pinching, opening, etc. quickly according to different needs in order to play its function, therefore, when dealing with hand trauma clinically, especially fracture fixation, the hand should be fixed in the functional position. Therefore, the hand should be fixed in a functional position in clinical management of hand trauma, especially fracture fixation.