Ulnar Nerve Entrapment

Background

The Ulnar Nerve is located here in the forearm and can become entrapped in the elbow and/or wrist.  

Symptoms of Ulnar Nerve Entrapment initially include numbness and tingling of the ring and pinky fingers.  If left untreated, it may progress to loss of motor function in the hand.  During this, a person may notice clumsiness and weakness in the hand.  As this condition progresses, it may causes noticeably atrophy in the hand musculature.

When the Ulnar Nerve becomes trapped at the elbow this is known as Cubital Tunnel Syndrome.  Interestingly, the Ulnar Nerve being entrapped in the elbow is the second most common place to have a nerve entrapment in the upper extremity.  Risk factors for Cubital Tunnel Syndrome include:

  • Diabetes Mellitus
  • Blunt trauma to the Ulnar Nerve at the elbow
  • Occupations that require arm flexion (answering telephones for example)
  • Elbow being repeatedly pressed against a hard surface

Nerve glides can be performed to help improve the nerve's movement and to reduce symptoms.

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Treatment

Begin by touching your index finger and thumb together making the OK sign. Bend your elbow out to the side and begin to bring your hand up. 
 
Seated Ulnar Nerve Glide
 
 
When you feel a stretch in your hand or elbow, stop there.  Perform 10 repetitions, remember do not over stretch.  
 
As your motion improves, you can progress to this end position.
 
Seated Ulnar Nerve Glide End Position
 
These can also be performed while laying on a therapy table.  Follow the same rules before by making the OK sign with your fingers and bending your elbow.  Also, perform 10 repetitions and remember to not over stretch the nerve.    
 
Lying Ulnar Nerve Glide
 
 
Like the seated position, your ending position is when your fingers are over your eye.
 
Lying Ulnar Nerve Glide End Position
 

References

Cutts S. Cubital tunnel syndrome. Postgraduate Medical Journal. 2007;83(975):28-31. doi:10.1136/pgmj.2006.047456.