Chronic compression syndromes (entrapment) of nerves, tumors of peripheral nerves

Cubital tunnel syndrome
Consists of collateral ulnar ligament, medial epicondyle of the humerus, olecranon and aponeurosis of the flexor carpi ulnaris muscle.

Etiology
In general, there is an elargement of the surrounding structures and oppression of the ulnar nerve.

The most common causes are:


 * after fractures - a hypertrophic muscle develops.
 * professional load - long-term elbow flexion (glass grinders).

Clinical manifestations

 * tingling of the 4th and 5th fingers, numbness of the fingers often even paresis and atrophy
 * typical difficulties - when fastening a belt, turning on a ziper, a button.
 * in severe casa - claw-like hand and paralysis of the interosseous muscle.