Anterior interosseous nerve entrapment syndrome
Introduction
Introduction of anterior interosseous nerve compression syndrome The anterior interosseous venous compression syndrome (anteriorinterosseous entranter vesyndrome) was reported by Kiloh and Nevin in 1952, and subsequent cases were reported. Its incidence accounts for about 1% of the distal forearm neuropathy. basic knowledge The proportion of illness: 0.005% Susceptible people: no specific population Mode of infection: non-infectious Complications: somatosensory disturbance
Cause
Cause of anterior interosseous nerve compression syndrome
(1) Causes of the disease
The etiology of anterior interosseous nerve compression can be divided into three categories:
1. Direct trauma.
2. Partial median nerve injury causes anterior interosseous nerve injury.
3. Cardiac or neuropathy caused by inflammation of the anterior interosseous nerve.
There are other reasons that can cause anterior interosseous nerve compression.
(two) pathogenesis
No relevant information.
Prevention
Anterior interosseous nerve compression syndrome prevention
Pre-interosseous nerve compression syndrome What foods are good for the body: pay attention to light diet, eat more fruits and vegetables, and properly mix the meal. Add multivitamins and eat more fresh vegetables and fruits. You can eat a variety of protein-rich foods such as lean meat, milk, and eggs. It is best not to eat food; avoid tobacco, alcohol. Avoid spicy and irritating foods, such as onions, garlic, ginger, pepper, pepper, cinnamon, etc., avoid fatty food.
Complication
Anterior interosseous nerve compression syndrome complications Complications
Potential complications such as decreased muscle strength and sensory disturbances.
Symptom
Symptoms of anterior interosseous nerve compression syndrome Common symptoms Pain in the forearm and wrist Writing or taking small items is difficult to paralyze
The anterior interosseous nerve compression is pure motor neuron paralysis, which is characterized by flexor hallucis longus, the deep flexor of the index finger and middle finger, and the muscle strength of the anterior muscle. In addition, the anterior interosseous nerve has a terminal sensory branch. Part of the wrist feels, so the pain in the forearm and wrist is a common clinical manifestation of the disease.
1. Typical signs often have proximal forearm volar, spontaneous pain in the pronated round muscle area and the volar side of the wrist. Symptoms are aggravated during activity, especially when the forearm is active. Because of the pain, the movement of the limb is restricted. Pain can be relieved within a few weeks or months. The typical clinical manifestations are the flexor hallucis longus, the deep flexor of the index finger and the middle finger, and the muscle strength of the anterior muscle. The patient complains that it is often difficult to write or take small items. But no hands feel changed.
The clinical signs are still based on the flexor hallucis longus, the deep flexor of the index finger and middle finger and the muscle strength of the anterior muscle. The thumb and index finger grip test are helpful for diagnosis (Fig. 2).
2. Anatomical and clinical features of atypical anterior interosseous nerve compression syndrome Due to the frequent anatomical variation, the clinical manifestations of anterior interosseous nerve compression often have certain changes.
(1) The middle finger refers to the deep flexor: it can be innervated by the ulnar nerve (about 50%), so sometimes the clinical manifestation is only the weakening of the flexor digitorum of the flexor hallucis longus and the index finger.
(2) The median nerve and the ulnar nerve Martin-Gurber anastomosis: about 17%, of which the more common abnormal anastomosis is the anastomosis of the anterior interosseous nerve and the ulnar nerve. When the interosseous nerve is stuck, it can cause the inside of the hand. The muscle strength is weakened.
(3) refers to deep flexor: can be completely dominated by the anterior interosseous nerve, therefore, clinical manifestations of all the fingers of deep flexor muscle weakness.
(4) anterior interosseous nerve: can be branched to control the superficial flexor.
Examine
Examination of anterior interosseous nerve compression syndrome
A viable electromyogram is available to aid diagnosis.
Diagnosis
Diagnosis and identification of anterior interosseous nerve compression syndrome
In the diagnosis of anterior interosseous nerve compression, the most common misdiagnosis is the fracture of the flexor hallucis longus and the deep flexor tendon. Among the 33 cases of anterior interosseous nerve compression reported by Hill, 10 cases were diagnosed as tears. There is also a report that the sacral tear is misdiagnosed as a anterior interosseous nerve compression. Therefore, the clinical should be differentiated. The disease should be differentiated from thoracic outlet syndrome, radiculopathy, brachial plexus neuritis, and median nerve injury. .
Electrophysiological examination has important diagnostic value for the identification of anterior interosseous nerve compression.
