Drooping wrist

Introduction When the patient's forearm is straight, the wrist, fingers and thumb cannot be actively extended and abducted; or the patient's hands are straightened, the palms are closed, and then the two wrists are attached to each other to separate the two hands. And "sliding down" along the opposite palm, that is, the wrist is drooping. The wrist sag is more visible when the patient makes a fist. You should go to the surgery of a regular hospital to check what causes it, such as the examination of the affected area, the examination of the nervous system.

Cause

Reasons for the sagging of the wrist:

Intrinsic positives suggest a sacral nerve injury or a fracture of the dorsal extension of the forearm. It can also be found in toxic neuritis (such as lead or arsenic poisoning), vitamin B1 deficiency or polio. Refers to the trauma, fracture, dislocation, sprain or wrist strain of the wrist, which causes thickening of the transverse ligament of the wrist, swelling of the muscle inside the tube, degeneration of the blood vessels, or degeneration of the carpal bone, which reduces the circumference of the lumen. , thereby suppressing the median nerve, causing a condition in which the finger is numb and weak. The patient straightens both hands, the palms are closed, and then the two wrists are attached to each other to separate the two hands. It can be seen that one finger cannot leave outward, and the "sliding down" along the opposite palm is the sagging of the wrist. The wrist sag is more visible when the patient makes a fist. You should go to the surgery of a regular hospital to check what causes it, such as the examination of the affected area, the examination of the nervous system.

an examination

Related inspection

Spinal muscle strength test, supinator muscle strength test, bone and joint MRI examination

Wrist check:

The patient straightens both hands, the palms are closed, and then the two wrists are attached to each other to separate the two hands. It can be seen that one finger cannot leave outward, and the "sliding down" along the opposite palm is the sagging of the wrist. The wrist sag is more visible when the patient makes a fist.

Identification of wrist droop

Wrist contusion: When a person falls to the ground with his hand, the wrist is the joint that first receives and transmits an external force to the proximal end of the limb. Therefore, the wrist joint is susceptible to injury, such as improper treatment after injury, can cause changes in the relationship between the carpal bones, the so-called wrist instability.

Can not flex to the ulnar side of the wrist and the distal ring of the flexor ring of the little finger: common in the ulnar nerve injury, other symptoms include the injury on the elbow, the ulnar wrist flexor and the deep flexor ulnar side.

Differential diagnosis

Differential diagnosis of wrist droop

Wrist contusion: When a person falls to the ground with his hand, the wrist is the joint that first receives and transmits an external force to the proximal end of the limb. Therefore, the wrist joint is susceptible to injury, such as improper treatment after injury, can cause changes in the relationship between the carpal bones, the so-called wrist instability.

Can not flex to the ulnar side of the wrist and the distal ring of the flexor ring of the little finger: common in the ulnar nerve injury, other symptoms include the injury on the elbow, the ulnar wrist flexor and the deep flexor ulnar side.

Dangling wrist: The scapula is a typical symptom of dyskinesia in the type of symptoms of sacral nerve paralysis. The phrenic nerve consists of C5-8, which governs upper limb paralysis, elbow muscle, diaphragm, supinator, extensor and lupus. The main functions are elbow extension, wrist extension and extension.

Flexion of the wrist and flexion: The elbow joint activity is limited in patients with humeral fractures of the humerus. The forearm is pronation, flexion, and weakness. The internal humeral fracture is the most common type of elbow injury, accounting for about 10% of the elbow fracture, second only to the supracondylar fracture of the humerus and the external humerus fracture, accounting for the third place in the elbow injury. Fractures occur mostly in teenagers and children. In this age group, the upper iliac crest is a callus, which has not been fused with the lower end of the humerus, so it is easy to avulse, which is called avulsion fracture of the upper humerus.

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