• Ulrike M Hamscha, Ines Tinhofer, Stefan Heber, Wolfgang Grisold, Wolfgang J Weninger, and Stefan Meng.
• Center for Anatomy and Cell Biology & Medical Imaging Cluster, Medical University Vienna, Austria.
• Muscle Nerve. 2017 Aug 1; 56 (2): 237-241.

IntroductionUlnar neuropathy at the elbow (UNE) is a common peripheral compression neuropathy and, in most cases, occurs at 2 sites, the retroepicondylar groove or the cubital tunnel. With regard to a potential therapeutic approach with perineural corticosteroid injection, the aim of this study was to evaluate the distribution of injection fluid applied at a standard site.MethodsWe performed ultrasound-guided (US-guided) perineural injections to the ulnar nerve halfway between the olecranon and the medial epicondyle in 21 upper limbs from 11 non-embalmed cadavers. In anatomic dissection we investigated the spread of injected ink.ResultsInk was successfully injected into the perineural sheath of the ulnar nerve in all 21 cases (cubital tunnel: 21 of 21; retroepicondylar groove: 19 of 21).ConclusionUS-guided injection between the olecranon and the medial epicondyle is a feasible and safe method to reach the most common sites of ulnar nerve entrapment. Muscle Nerve 56: 237-241, 2017.© 2016 Wiley Periodicals, Inc.

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