Arm nerve injury symptoms?

summary

The innervation of hand mainly comes from median nerve, ulnar nerve and radial nerve. After nerve injury, it will not only cause sensory disturbance, but also often affect the hand movement and sympathetic nerve function. Therefore, the hand function is greatly affected. If not treated in time, once the small muscle atrophy of the hand, it will affect the effect of treatment. Therefore, the hand nerve injury should be found and treated in time. Arm nerve injury symptoms? Let's talk about it

Arm nerve injury symptoms?

After median nerve injury, sensory and sympathetic nerve dysfunction mainly distributed in the palmar part of the radial half of the thumb, index finger, middle finger and ring finger, and motor innervation was mainly in thenar muscle. After injury, the main manifestations were thumb to palm dysfunction and thenar muscle atrophy.

After ulnar nerve injury, the main distribution areas of sensory and sympathetic nerve dysfunction were the palmar side of the ulnar half of the little finger and ring finger and the ulnar half of the dorsal hand. The motor innervation areas were the hypothenar muscle and the intrinsic muscle of the hand. After injury, the main manifestations were the straightening disorder of the ring and small finger, the functional disorder of the two fingers and the fine motor dysfunction, Muscle atrophy is mainly manifested as atrophy of thenar muscle and intrinsic muscle of hand.

The radial nerve only has sensory nerve and sympathetic nerve distribution below the wrist, and the distribution area of its dysfunction is mainly in the radial half of the dorsal hand. The overall clinical manifestations of hand nerve injury were sensory, motor and sympathetic dysfunction, and positive Tinel sign at the site of nerve injury.

matters needing attention

For entrapment nerve injury, it is necessary to distinguish whether the entrapment is caused by pathological factors (such as local tumor) or physiological factors (ligament). If it is caused by the former, timely surgical treatment is needed to remove the pathological factors and release the nerve; If it is the latter, it can be treated conservatively for a period of time. If the conservative treatment is ineffective, it can be operated to release the nerve.