Ulnar Tunnel Syndrome

Brief Outline of Ulnar Tunnel Syndrome

One of three major nerves responsible for motor function and sensation in the hand, the ulnar nerve runs along the inside of the forearm, reaching down to the heel of the hand. In the hand, the ulnar nerve radiates across the palm and into the little finger and ring finger. Pressure on the ulnar nerve can result in pain, loss of sensation and muscle weakness in the hand.

Anatomy and physiology

The humerus of the upper arm has three bony points, frequently associated with repetitive strain injuries. Two of these bony points are involved in ulnar tunnel syndrome, the olecranon and the medial epicondyle in the elbow. The space between these bony protrusions is known as the ulnar tunnel. The ulnar nerve, which acts on the muscle that pulls the thumb toward the palm of the hand, also controls small intrinsic muscles of the hand. It passes through the cubital or ulnar tunnel at the elbow, running down the forearm and into the hand. It is one of the three major nerves in the arm, the others being the radial and median nerves.

Ulnar Nerve Neuritis

 

Cause of Ulnar Tunnel Syndrome

Overuse of muscles and tendons of the forearm, especially in golf, and sports involving throwing. Abnormal growth in the wrist, such as cyst. Sudden trauma to the ulnar nerve within the ulnar tunnel.

Sign and symptoms

Weakness and increasing numbness on the little finger side of the hand. Difficulty grasping and holding objects. Tingling along the outer forearm, especially when the elbow is bent.

Treatment

  • Cease the activity which is causing pressure on the ulnar nerve, and avoid keeping the elbow in a bent position.
  • Injection.
  • Physiotherapy.
  • Surgery if all conservative treatment fails.

Rehabilitation and prevention

In the case of ulnar tunnel syndrome due to an abnormal growth such as a cyst, surgery may be required to remove it. Where repetitive stress or exercise have led to ulnar nerve inflammation, non-surgical physical therapy, including strengthening exercises will often yield improvement in 4-6 weeks.

Long-term Prognosis

In cases where ulnar tunnel syndrome receives prompt and appropriate attention, the prognosis for full recovery is good. Nerve damage and deficit can result however, should the condition be allowed to persist without care.

Call (+65) 6471 2674 (24 Hour) to fix an appointment to treat Ulnar Tunnel Syndrome today.