The ulnar nerve is mixed, it includes a motor and sensory nerves. This is a large nerve that originates from the internal beam of the brachial plexus and reaches the brush innerviruya of the fingers. When jamming (more correctly infringement) of the ulnar nerve is a gradual atrophy (reduction in size and loss of function) of small muscles of the hand.
Why can occur pinched ulnar nerve
Entrapment occurs when the ulnar nerve of his constant squeezing people whose work is connected with a support on the elbows. This occurs in workers who rely elbows on the machine at the office workers leaning his elbows on the desk, and even the disabled, if they are a long time in the chair, resting his elbows on the armrests. Entrapment of the ulnar nerve injuries can occur when the lower third of the arm, at the elbow, with fractures of the inner projection (condyle) of the humerus.
Damage to the ulnar nerve can be primary (trauma, tumor) and secondary, with the involvement of a nerve in the rumen, squeezing, or inflammation of the surrounding tissue. The living conditions of the ulnar nerve damage observed mainly in the lower third of the forearm and the elbow bone fractures. Violation of the integrity of the nerve leading to the development of neuroma (a benign tumor), scarring, dysfunction of limbs, pain.
The reason of infringement of the ulnar nerve may be a tumor originating from the nerve or surrounding tissue.
As a result of the injury gradually violated the metabolic processes in the ulnar nerve, and then the same violations begin in the muscles innervated by them.
If the infringement of the ulnar nerve wrist flexion and abduction in its ulnar side is difficult, no movement of the little finger, bending IV and V fingers is limited, bringing thumb difficult. Paralysis (complete immobilization) intercostals muscle retraction and bringing fingers is not satisfied, there is no extension of the ends of the fingers (distal phalanges) of the little finger and disposal, intercostals muscles atrophy, and the intercostals spaces dramatically sink. All this leads to the fact that manifests a marked effect of antagonist muscles (extensor). The result is a kind of appearance of brush that looks like a bird's claw or paw: fingers unfolded in the proximal phalanges (those adjacent to the brush). III, IV and V of the fingers are slightly bent at the middle and end phalanges, and the end phalanges flexion increases to the little finger, because of which the fingers are not arranged in a single plane.
Can violated sensitivity V and half of the IV finger on the palm side and the V, IV, III finger half on the back of the hand. Often, there are pains that are projected onto the little finger, and trophic (due to circulatory disorders) disorders.
When nerve damage in the shoulder "kogteobraznaya brush" expressed not quite sharply, marked atrophy of the intercostals first period, the rise of the little finger and the internal division of the elevation of the thumb flattened. When lesions of the ulnar nerve in the middle and lower third of the forearm "kogteobraznaya brush" expressed sharply.
To detect lung functional disorders of the ulnar nerve held special diagnostic techniques. For example, the test is Frohman. The patient was offered to stretch a piece of paper, taking it with both hands (bent index finger and thumb rectified). With the defeat of the ulnar nerve thumb on the patient side of the compensatory bends by reducing the flexor of the thumb.
In addition, a diagnosis using X-ray diffraction, X-ray studies using contrast agents, for suspected tumor biopsy puncture is performed followed by laboratory examination punctate.
Treatment of infringement of the ulnar nerve depends on the cause, he was summoned. Conservative treatment aims to restore nerve stimulation and pain. Used means relieves swelling
Prevention and treatment of edema - it is important to understand the root cause
tissue, vitamin B
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(they contribute to the restoration of nervous tissue), spasmolytics (improves blood circulation and nerve nutrition) and, if necessary, analgesics.
Furthermore, appointed physiotherapy (thermal, electrophoresis with novocaine
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, High-dose irradiation of ultraviolet rays, electrical nerve and muscle), as well as physiotherapy, massage and reflexology
Reflexology - a policy of non-drug therapies
For injuries stapling operation is conducted nerve, which can be done immediately after an injury or after unsuccessful conservative treatment for two months. If the cause of nerve entrapment was a tumor, it is removed.