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Introduction Due to the long-term, repeated, intense contraction and traction of the forearm extensor group, different degrees of acute or chronic accumulation damage occur in the iliac crest of the tibia, and the muscle fibers are torn, hemorrhage, mechanized, and adhered. Refers to the phenomenon of powerlessness. External epicondylitis is mainly due to long-term, repeated, intense contraction and traction of the extensor muscles of the forearm, causing different degrees of acute or chronic accumulation damage to the external iliac crest of the humerus, tearing, bleeding, and muscle fibers. It is a clinical symptom caused by a sterile inflammatory reaction.

Cause

(1) Causes of the disease

Due to occupations, it is necessary to repeatedly exercise the wrist activities, such as "backhand" in the table tennis and tennis. Masonry workers, hairdressers, accountants, and people who accidentally engage in simple contraction of arm exercises can cause chronic strains attached to the tendon and fascia of the upper temporal humerus.

(two) pathogenesis

From the external iliac crest of the humerus, there are the long extensor muscle of the radial side of the wrist, the short extensor muscle of the radial side of the wrist, the diaphragm, the supinator muscle, etc. The main function is to stretch the wrist and extend the finger, and then the forearm is rotated. Excessive wrist extension or forearm rotation will cause the wrist extensor tendon and fascia attached to the upper iliac crest to be injured and injured.

The pathological changes of the disease are more complicated, and there are often muscle fibers in the upper part of the upper axillary part, or joint synovial incarceration or synovitis, or neuritis that innervates the nerve branch of the extensor muscle, or the tibial ligament degeneration, or the humerus Upper periostitis and so on. The local reaction is often hyperemia, edema, or exudation, adhesion and the like.

an examination

Related inspection

X-ray lipiodol CT examination

1. Slow onset, related to frequent arm strength.

2. Pain outside the elbow joint, writing and other hand weights are aggravated. The attachment of the extensor muscles of the external iliac crest was tender and the elbow joint activity was normal.

3. Pain is aggravated when writing, clenching fists, wrist joints stretching resistance or lifting heavy objects.

4. The Mills test is positive.

5. The above is the basis for the diagnosis of tennis elbow.

6. Golf elbow: The diagnosis is basically the same as the tennis elbow, except that the pain is on the inside of the elbow joint, the tenderness is in the upper iliac crest, and the forearm flexor tendon pull test is positive.

Differential diagnosis

Finger numbness: The sensory nerve of the finger is distributed by the nerve roots separated by the cervical spinal cord to the hands and fingers. When the nerve damage occurs in some parts, inflammation, tumor, pressure, etc. cause abnormalities, fingers appear. Numbness.

Fingers can not flex and stretch: Finger flexor tenosynovitis can cause fingers to bend and stretch. Mainly manifested as limited pain in the volar side of the metacarpophalangeal joint and restricted finger movement. As the stenosis of the tendon sheath is aggravated and the tendon is swollen after the tendon is compressed, most of the swelling will be difficult or impossible to slide through the narrow tendon sheath, and the finger stays in the extension or flexion position, and the interlocking phenomenon occurs.

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