Recurrent Ulnar-Nerve Dislocation at the Elbow

Clinical Assessment of the Ulnar Nerve at the Elbow: Reliability of Instability Testing and the Association of Hypermobility with Clinical Symptoms

“…The prevalence of ulnar nerve hypermobility (37%) and dislocation (7%) in this study was higher than expected 4,5 . However, the relatively higher frequency of perching relative to dislocation is consistent with prior reports in the literature 2,4,5,14 .…”

“…A s prior investigations into the prevalence of ulnar nerve hypermobility have relied on single examiners and have not explicitly defined the method of clinical examination 4,5 , the interobserver reliability of this diagnostic maneuver had not been determined. To our knowledge, the current investigation is the first to examine the interobserver reliability of physical examination for ulnar nerve hypermobility and to quantify the relationship between ulnar nerve hypermobility and symptomatology.…”

“…Prior studies of clinical examination and advanced imaging techniques have documented increased nerve mobility in 2% to 47% of the population [1][2][3][4][5] and have classified the nerves that shift onto the medial epicondyle as subluxing or incomplete and those that translate completely over the medial epicondyle as dislocating or complete 2,4 . Recent investigations utilizing dynamic Disclosure: In support of their research for or preparation of this work, one or more of the authors received, in any one year, outside funding or grants of less than $10,000 from a grant (UL1 RR024992) from the National Center for Research Resources, a component of the National Institutes of Health (NIH), and the NIH Roadmap for Medical Research, for statistical support.…”

Pearls & Oy-sters: False positives in short-segment nerve conduction studies due to ulnar nerve dislocation

“…DISCUSSION The prevalence of ulnar nerve displacement in the present study was similar to the results of our previous study that showed dislocation in 3.8% and subluxation in 20.5% of subjects. 1 The results of these two studies showed a high percentage of ulnar nerve displacement in comparison with a previous report, 9 although this is probably due to the increased precision of investigation with high-resolution ultrasonography. On the other hand, the percentage of ulnar nerve displacement in the present study was low in comparison with that from another report that found ulnar nerve dislocation in 39 elbows (20%) and ulnar nerve subluxation in 53 elbows (27%) Figure 3 Example of short-segment ulnar nerve conduction study…”

Pitcher’s elbow: medial elbow pain in the overhead-throwing athlete

“…Traditionally, authors have advocated for submuscular transposition of the ulnar nerve in the overhead athlete as they believe this better protects the nerve from future direct or indirect trauma [41][42][43][44]. Several of these reports have shown excellent results with high rates of return to play.…”