Table Common Work-Related Nerve Entrapment Syndromes Syndrome Nerve (location) Area of numbness Causative Repetitive Movement Carpal tunnel Median (wrist) Lateral hand; thumb, index, and middle fingers and lateral half of the ring finger Wrist extension and flexion, vibration Cubital tunnel Ulnar (elbow) Medial hand, little finger, medial ring finger Elbow flexion or leaning on the elbow Prognosis Most work-related repetitive motion injuries resolve with rest over a period of weeks.