What is the goal of subcutaneous transposition for ulnar neuropathy?

Updated: Jun 08, 2018
  • Author: Charles F Guardia, III, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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Answer

Distally, the additional common aponeurosis between the flexor digitorum superficialis to the ring finger and the humeral head of the flexor carpi ulnaris is sought and, if present, excised to prevent kinking. Motor branches to the flexor carpi ulnaris and flexor digitorum profundus are identified, protected, and preserved. The first motor branch to the flexor carpi ulnaris from the ulnar nerve proper is dissected out if necessary to prevent kinking.

The nerve is transposed into the subcutaneous plane. A search is made for any remaining sites of constriction or tethering. Several different modifications are used to maintain the ulnar nerve in the transposed position. One is to hold the nerve to the muscle fascia with a few sutures through the epineurium. However, the more popular approach is to use some form of sling. [174, 175] .


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