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The flexor carpi ulnaris has two heads; a humeral head and ulnar head. The humeral head originates from the medial epicondyle of the humerus via the common flexor tendon. The ulnar head originates from the medial margin of the olecranon of the ulna and the upper two-thirds of the dorsal border of the ulna by an aponeurosis.
Types of wrist drop are distinguished by the nerves affected: Weakness of brachioradialis, wrist extension and finger flexion = radial nerve lesion; Weakness of finger extension and radial deviation of the wrist on extension = posterior interosseous nerve lesion; Weakness of triceps, finger extensors and flexors = c7,8 lesion
The wrist is clinically tested by slight flexion while the physician feels the back of the wrist with the thumb. [4] The physician may also test the range of motion by flexion, extension, radius, and ulna deviation, with normal ranges of 65-80 degrees of flexion, 55-75 degrees of extension, 30-45 degrees of ulna deviation, and 15-25 degrees of ...
A hand imitating an ulnar claw. The metacarpophalangeal joints of the 4th and 5th fingers are extended and the Interphalangeal joints of the same fingers are flexed.. An ulnar claw, also known as claw hand or ‘Spinster’s Claw’, is a deformity or an abnormal attitude of the hand that develops due to ulnar nerve damage causing paralysis of the lumbricals.
Ulnar neuropathy may be caused by entrapment of the ulnar nerve with resultant numbness and tingling. [3] It may also cause weakness or paralysis of the muscles supplied by the nerve. Ulnar neuropathy may affect the elbow as cubital tunnel syndrome. At the wrist a similar neuropathy is ulnar tunnel syndrome. [4]
The next goal is strengthening and flexibility, usually involving wrist extension and flexion; however, it is important not to overuse the muscles in order to prevent re-injury. If surgery is required, post operative therapy initially involves decreasing pain and sensitivity to the incision area.
Exercises that involve shoulder extension, flexion, elevation, depression, abduction and adduction facilitate healing by engaging the nerves in the damaged sites as well as improve muscle function. Stretching is done on a daily basis to improve or maintain range of motion. Stretching is important in order to rehabilitate since it increases the ...
Volkmann's contracture is a permanent flexion contracture of the hand at the wrist, resulting in a claw-like deformity of the hand and fingers. Passive extension of fingers is restricted and painful. Passive extension of fingers is restricted and painful.
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