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Distal Ulnar Neuritis (Guyon’s Canal Syndrome)

The ulnar nerve can be subjected to pressure where it crosses the wrist on the inner aspect of the hand. The pressure is caused by friction or impingement of the local tissues against the nerve causing mechanical irritation, as can happen during cycling. The symptoms of ulnar neuritis are pain and numbness in the little finger and half the ring finger, with muscular weakness on attempting to spread the fingers. The initial treatment is rest from painful activities and anti-inflammatory medication, but if this fails, surgery to decompress the nerve gives good results.

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