In:
Journal of Clinical Neurophysiology, Ovid Technologies (Wolters Kluwer Health), Vol. 35, No. 2 ( 2018-03), p. 133-137
Abstract:
Cadaveric palmar dissections reveal an ulnar sensory crossover (Berrettini anastomosis) to the third common palmar nerve so frequently that this crossover is considered a normal part of the anatomy. No literature has documented electrophysiologic evidence of the Berrettini anastomosis (BA). Presentation of third digit ulnar sensory crossover waveforms. Methods: Retrospective chart review case series. Clinical office. Nerve conduction waveforms and data. Results: Ulnar stimulation sensory crossover waveforms to digit three consistent with BA are presented. Conclusions: Third digit BA is measurable in routine electrodiagnostic nerve conduction study in some patients. The observed BA latency is the same and the amplitude is smaller (25% to 33%) than the ulnar sensory response. The clinical significance of the BA sensory response is unclear. The presence of a BA in severe carpal tunnel syndrome may give a small amplitude normal latency sensory response that could be misinterpreted and lead to a false negative result.
Type of Medium:
Online Resource
ISSN:
0736-0258
DOI:
10.1097/WNP.0000000000000427
Language:
English
Publisher:
Ovid Technologies (Wolters Kluwer Health)
Publication Date:
2018
detail.hit.zdb_id:
2065729-8
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