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Ulnar nerve neuropathy or ulnar nerve syndrome is where the ulnar nerve is compressed thus affecting the function of the nerve that supplies part of the arm and hand.
The ulnar nerve is one of four major nerves that supply the upper limb. It is formed by small branches from the spinal cord and travels down in front of the arm and around the inside surface of the elbow joint.
The nerve runs through the forearm supplying a number of muscles before finally ending in the hand and supplying some of the skin and small muscles of the hand.
It has two major functions in the hand:
As the nerve runs around the elbow joint it can be compressed by three major structures:
There are various causes for ulnar nerve syndrome or ulnar neuropathy. They include:
The symptoms are commonly:
The main investigations used to test this condition is a:
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