This damage slows or prevents conduction of impulses through the nerve. The ulnar nerve is commonly injured at the elbow because of elbow fracture or dislocation . The ulnar nerve is near the surface of the body where it crosses the elbow, so prolonged pressure on the elbow or entrapment of the nerve may cause damage. Prolonged pressure on the base of the palm may also cause damage to part of the Ulnar nerve, resulting in symptoms that are localized to the small hand muscles. In some cases, no detectable cause can be identified.
Prevention varies depending on the cause.
Avoid prolonged pressure on the elbow or palm. Casts , splints, and other appliances should be examined for proper fit. There may be weakness of wrist and hand flexion and difficulty moving the fingers. A detailed history may be needed to determine the possible cause of the neuropathy. Tests are guided by the suspected cause of the dysfunction, as suggested by the history, symptoms presented, and pattern of symptom development.