What is the role of the epicondylar (ulnar) groove in the anatomy of ulnar neuropathy?

Updated: Jun 08, 2018
  • Author: Charles F Guardia, III, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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The epicondylar (ulnar) groove is a fibro-osseous tunnel holding the ulnar nerve and its vascular accompaniment. It is slightly distal to the medial epicondyle, or at least to the beginning of it.

Campbell used slightly different terminology, lumping the epicondylar groove together with the medial epicondylar region and labeling the entire region the area of the retrocondylar groove. Halikis et al considered the medial epicondylar region and the epicondylar groove to be the area of the medial epicondyle. [29]

The medial epicondylar region and the epicondylar groove are generally considered to be the classic locations (or location, if considered as a single area) for tardy ulnar palsy. In the author’s personal experience, electromyographers and orthopedic surgeons more commonly refer to a tardy ulnar palsy at the retrocondylar groove, thus using the Campbell terminology.

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