What is the role of the region of the HUA in the anatomy of ulnar neuropathy?

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

The cubital tunnel is the passage between the two heads of the flexor carpi ulnaris, which are connected by a continuation of the fibroaponeurotic covering of the epicondylar groove (Osborne ligament). During elbow flexion, the tunnel flattens as the ligament stretches, causing pressure on the ulnar nerve. [38, 39, 40]

Campbell’s classification was basically the same for this region, except that he preferred to call it the region of the HUA, apparently because he believed that too many clinicians loosely used the term cubital tunnel to refer to a place anywhere in the elbow.

Halikis et al divided this region into two parts, the cubital tunnel and the Osborne fascia. [29] This is a good example of the problems with the terminology: Different terms are used for locations that are virtually the same. For all practical purposes—certainly with regard to anything that can be distinguished on electromyography (EMG)—the Osborne ligament is equivalent to the Osborne fascia, and both are equivalent to the HUA.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!