Τραυματισμός του νεύρου κubitού

　　After the ulnar nerve injury, the ulnar side of the hand, the entire little finger, and the ulnar side of the ring finger all lose sensation. The deep branch of the ulnar nerve is the motor branch, and it is sometimes injured by piercing or piercing injuries. The causes of ulnar nerve injury include the following:

　　1、Compression injuries are the most common, caused by direct violence to the nerve injury, often severe and often accompanied by nerve defects.

　　2、Traction injuries such as fractures of the medial epicondyle of the humerus, double fractures of the ulna and radius of the forearm, and fractures of the metacarpal bones can directly pull the ulnar nerve and cause injury.

　　3、At the elbow, the ulnar nerve can be directly injured or injured in conjunction with a fracture or dislocation.

　　4、Lacerations at the wrist and elbow are common.

　　5、If not protected during general anesthesia, hanging the arm over the edge of the operating table can cause paralysis due to compression.

　　6、In the cervical rib or anterior scalene muscle syndrome, the ulnar nerve is most frequently damaged.

　　After the ulnar nerve injury, the ulnar side of the hand, the entire little finger, and the ulnar side of the ring finger all lose sensation. The deep branch of the ulnar nerve is the motor branch, and it is sometimes injured by piercing or piercing injuries. What diseases may be associated with ulnar nerve injury

　　For those with severe ulnar nerve injury, there may be sensory hypoesthesia in the支配area, atrophy of the hypothenar muscle, and interosseous muscles.

　　After the ulnar nerve injury, the ulnar side of the hand, the entire little finger, and the ulnar side of the ring finger all lose sensation. The deep branch of the ulnar nerve is the motor branch, and it is sometimes injured by piercing or piercing injuries. At the wrist, the ulnar nerve is prone to laceration injuries, and the superficial branch of the ulnar nerve is also prone to laceration injuries. What are the symptoms of ulnar nerve injury?

　　1、motor

　　At the upper arm injury, the ulnar flexor muscle and the ulnar half of the deep flexor muscle are paralyzed and atrophic, unable to flex the wrist towards the ulna and flex the distal interphalangeal joint of the ring finger. When the fingers are flat, the little finger cannot climb the table surface. The intrinsics are widely paralyzed, the hypothenar, interosseous muscles, and the3、4The adductor pollicis, adductor hallucis, and medial head of the flexor digitorum brevis are all paralyzed. There are obvious indentations on the hypothenar and metacarpal spaces. The ring and little fingers have claw-like deformities. The claw-like deformity above the elbow is less severe; if the deep flexor muscle nerve is damaged distally, due to the loss of the opposing action of the deep flexor muscle, the claw-like deformity is obvious, that is, the metacarpophalangeal joint of the ring and little fingers is hyperextended and the interphalangeal joints are flexed. It is not possible to extend the interphalangeal joints while flexing the metacarpophalangeal joints. Due to the opposing action of the two radial adductor muscles, the index and middle fingers do not have claw-like deformities or only have slight deformities. The fingers cannot be adducted or abducted. The paper pinch test is positive. The thumb and index finger cannot form a complete 'O' shape when opposed, and the pinch test shows weakness, due to the paralysis of the adductor pollicis and the inability to stabilize the metacarpophalangeal joint of the thumb. There is a pinch impairment between the little finger and the thumb. Due to the paralysis of the intrinsics, the grip strength of the hand decreases by approximately50%, and lose the flexibility of the hand.

　　2Sensation

　　The ulnar side of the hand, the entire little finger, and the ulnar side of the ring finger all lose sensation.

　　There is no special preventive method for ulnar nerve injury, and it is best to avoid trauma. The diet of patients should be light and easy to digest, eat more vegetables and fruits, and pay attention to a balanced diet and adequate nutrition. In addition, patients should also pay attention to avoid spicy, greasy, and cold foods.

　　Ulnar nerve injury is more common with wrist and elbow lacerations. In the diagnosis of ulnar nerve injury, in addition to relying on its clinical manifestations, it also needs to be assisted by auxiliary examinations. This disease is mainly based on physical examination. Electromyography is performed when necessary.

　　The diet of ulnar nerve injury patients should be scientifically matched in quality and quantity. Calcium is the main component of bones, so it should be fully absorbed. It is not necessary to mention the growth period, but after adulthood, bones also need to undergo metabolism continuously. In addition, calcium has the effect of calming the mind and can alleviate pain. Foods rich in calcium include: fish, milk, yogurt, sesame, dark green vegetables, seaweed.

　　Protein is an indispensable nutrient for the formation of muscles, ligaments, and bones. Foods rich in protein include: pork, chicken, beef, liver, fish, shellfish, cheese, eggs, soybeans, and soy products.

　　The most common cause of ulnar nerve injury is compression injury, which is caused by direct violence. How should ulnar nerve injury be treated?

　　The treatment of ulnar nerve injury should be based on the condition of the injury, such as decompression, release, or anastomosis. To obtain length, the ulnar nerve can be moved to the front of the elbow. The effect of ulnar nerve anastomosis is not as good as that of the radial nerve and median nerve. Most of the radial nerve is motor fibers, most of the median nerve is sensory fibers, and the ulnar nerve has roughly equal sensory and motor fibers, so great care must be taken to accurately align the suture, and not to rotate. Simple suture of the sensory and motor branches of the ulnar nerve at its distal end is effective. If there is no recovery, the intrinsic extensors of the index and little fingers and the superficial flexors of the middle ring finger can be transferred to replace the interosseous muscles and lumbricals, improving the function of the hand.