Weak hand

Introduction The weakness of the hand grip is mainly manifested in the absence of strength when holding the object. Hand nerve compression syndrome, pre-spinal syndrome, cervical spondylosis, tennis elbow and other diseases can cause hand grip weakness. The nerve compression syndrome is one of the bone-fiber tube and ventricular compression syndrome. For the peripheral nerves, a certain part of the bone fiber tube, a small number of fibrous edges caused by compression and chronic damage caused by inflammatory reactions, resulting in abnormal neurological function. Ischemic contraction, scab tissue stimulation and compression of the ulnar nerve (3) ulnar nerve and ulnar artery, inflammation around the artery, ulnar artery embolization, etc. can stimulate the ulnar nerve.

Cause

(1) The ruler tube and the bean-hook fissure are composed of bone and inelastic ligamentous ligament, and are located in the wrist joint with frequent activities. The wrist joint is repeatedly moved, the little finger and the ring finger are extended, and the palm root continues to press the hard object. Both can damage the soft tissue around the carotid bone and the hook bone, making them inflamed, hypertrophic, and scarred, which can stimulate and compress the ulnar nerve passing through it.

(2) at the entrance of the ruler tube, because the strap is too tight and long-term compression, friction; when sleeping, the hand position of the pillow is pressed against the bone of the wrist, and the hook bone is too long, so that the lateral edge of the carotid bone and the soft tissue of the hook edge Injury, ischemic contraction, scar tissue stimulation and compression of the ulnar nerve.

(3) ulnar nerve and ulnar artery, inflammation around the artery, ulnar artery embolization, etc. can stimulate the ulnar nerve and the disease.

an examination

Related inspection

Paper jam test coin slam test

It can be diagnosed according to its clinical symptoms.

(1) history of trauma, history of strain, and history of long-term cold and wet stimulation.

(2) The wrist joint and the finger are weak or painful, and the shallow branch of the ulnar nerve is abnormal in the distribution area of the hand, and the small fish is atrophied.

(3) soft tissue tenderness between pea bone and hook bone, soft tissue degeneration and hard.

(4) Special inspection:

1 paper test is positive.

2 strong wrist or extension of the wrist can cause wrist pain and little finger pain, numbness.

3 Sniper test or Tinel's sign positive.

4 resistance test is positive.

5 claw-shaped finger deformity.

Differential diagnosis

(A) carpal tunnel syndrome: This disease, also known as late onset of the median nerve paralysis, is the median nerve caused by compression in the carpal tunnel. The carpal tunnel is located at the base of the palm, and the bottom and sides are composed of a carpal bone. The transverse gland of the gland spans over it to form a bone-fibrous channel.

Long-term overuse of the hands and wrists causes chronic damage, and the transverse ligament and the tendon of the wrist can cause chronic damage inflammation, making the stenosis the most common cause. Followed by acute wrist injury, distal radius fracture, lumbar dislocation can cause acute or secondary compression of the median nerve. Certain systemic diseases can be enlarged by the contents of the carpal tunnel, causing spontaneous median nerve damage.

(B) wrist canal syndrome: This disease is also known as Guyon tube syndrome, bean-hook hole syndrome, Ramsay-Hunt syndrome. The wrist tube has a triangular cross section, the front wall is a shallow wrist transverse ligament, the posterior wall is a deep wrist transverse ligament, and the inner side wall is a carotid bone and a bean hook ligament. The ulnar nerve and the ulnar movement and the vein pass. The ulnar nerve is compressed within it causing the ulnar tube syndrome.

(C) anterior circular muscle syndrome: the middle of the nerve in the forearm proximal, caused by the compression of the zygomatic arch between the two sides of the pronator. When the forearm is in front of the pronation, the median nerve is lifted by the lateral head of the pronator, so the disease is more common in the forearm. Pain in front of the elbow, can be radiated to the three sides of the temporal side, may have weakness, excessive use of the arm will aggravate the pain, the median nerve innervation area may have numbness, burning sensation and objective sensory disturbance. The upper edge of the pronator can have tenderness and Tinel sign. Powerless to the palm. Local corticosteroid injection can relieve symptoms. If it is not effective, it can be surgically cut off the card or the fiber band.

(D) anterior interosseous nerve compression syndrome: This disease, also known as Kiloh-Nevin syndrome, is the median nerve of the anterior interosseous nerve branch refers to the upper edge of the superficial flexor of the zygomatic arch or fiber band compression. It is characterized by pain in the elbow, and the flexion of the distal interphalangeal joint of the thumb and the two fingers is weakened. For example, the full flexion of the flexor hallucis longus can be expressed as a "" sign. When the elbow is flexed, the muscles in the front of the spine are weak, and the hand feels normal. The inner tendon of the hand.

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