Nerve entrapment syndromes in the upper limb.

Nerve entrapment in the upper limb usually presents as pain, sensory disturbance and motor loss; the most common diagnosis is carpal tunnel syndrome. A high index of suspicion with some anatomical knowledge aid the recognition of clinical patterns and diagnosis. Treatment of patients with intermittent or early progressive changes has an excellent prognosis; most with constant sensory or motor loss will show at least partial response to treatment.