Hypertrophic ancenous epitrochlearis muscle as a cause of ulnar neuropathy at elbow

Article type: Research Article

Authors: Yalcin, Elif^*; | Demir, Sibel Ozbudak | Dizdar, Dilek | Buyukvural, Sıdıka | Akyuz, Mufit

Affiliations: Department of Physical Medicine and Rehabilitation, Ankara Physical Medicine and Rehabilitation Training and Research Hospital of the Ministry of Health, Ankara, Turkey

Correspondence: [*] Corresponding author: Elif Yalcin, Ankara Fizik Tedavi Rehabilitasyon Egitim ve Arastırma Hastanesi Turkocagı Sokak Sihhiye, Ankara, Turkey. Tel.: +90 5053749467; E-mail: [email protected]

Abstract: We report herein a 35-year-old man who suffered from pain at his left elbow and numbness in his left hand. Electromyographic studies demonstrated a localized nerve conduction block in the left elbow region. Ultrasonographic evaluation revealed enlargement of the ulnar nerve at the level of the medial epicondyle as well as bilateral anconeus epitrochlearis muscles, one of which was hypertrophic, causing the ulnar neuropathy at the symptomatic site. We emphasize with this case report the complementary role of ultrasound in peripheral nerve pathologies, as it confirmed the entrapment and determined the underlying cause.

Keywords: Ulnar nerve, anconeus epitrochlearis muscle, electromyography, ultrasonography

DOI: 10.3233/BMR-2012-00360

Journal: Journal of Back and Musculoskeletal Rehabilitation, vol. 26, no. 2, pp. 155-157, 2013