MRN findings of lateral antebrachial cutaneous nerve impingement in a collegiate athlete

• Published in: Skeletal radiology Vol. 49; no. 5; pp. 809 - 814
• Main Authors: Nguyen, My-Linh, Rosenthal, Jeffrey, Umpierrez, Monica, Lourie, Gary M., Singer, Adam D.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2020; Springer; Springer Nature B.V
• Subjects: Athletes; Case Report; Case reports; Compression; Diagnosis, Differential; Etiology; Football - injuries; Forearm; Forearm - diagnostic imaging; Forearm - innervation; Forearm - physiopathology; Humans; Imaging; Magnetic resonance; Magnetic Resonance Imaging - methods; Male; Medicine; Medicine & Public Health; Nerve Compression Syndromes - complications; Nerve Compression Syndromes - diagnostic imaging; Nerve Compression Syndromes - surgery; Nuclear Medicine; Orthopedics; Pain - etiology; Pathology; Radiology; Young Adult; Dynamic; LABC; LABCN; MRI; MRN; Lateral antebrachial cutaneous nerve; Elbow
• ISSN: 0364-2348; 1432-2161
• DOI: 10.1007/s00256-019-03345-3

Dynamic compression of the lateral antebrachial cutaneous nerve (LABCN) occurs with forearm pronation when the LABCN becomes compressed by the lateral margin of the biceps tendon. LABCN compression is a rare occurrence and is often overlooked as an etiology for forearm pain. While this entity has been described in several case reports in the orthopedic literature, it has not yet been described in radiology literature. We present a case of LABCN compression by the biceps tendon which was suggested by high-resolution magnetic resonance neurography in combination with the clinical findings and was subsequently confirmed and corrected surgically.