What complications can occur after decompression with anterior 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

After decompression with anterior transposition, complications can include recurrent subluxation of the ulnar nerve. Incomplete release of fascial slings may result in new areas of compression. In one series of subcutaneous transpositions, 90% of the failures were secondary to incomplete release of the medial intermuscular septum. An ineffective sling may not maintain the position of the transposed nerve and prevent resubluxation.

In addition, scarring may occur in the new muscular channel for the nerve. Perineural fibrosis may result from an intraneural injury or from a nerve transfer to a hypovascular bed. Injury to the flexor carpi ulnaris motor branches during nerve mobilization may result in weakness. Ligation of the posterior ulnar recurrent artery during nerve mobilization may result in nerve devascularization. A postoperative elbow flexion contracture may occur.


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