EC Clinical and Medical Case Reports

Ultrasound of the left hand using a superficial high-frequency probe a focal nodular thickening of the left ulnar nerve next to the cutaneous scar which is hypoechoic heterogeneous in appearance with loss of the honeycomb appearance in relation to its swelling, without color Doppler taking. In the normal state on ultrasound, the nerve is made up of hypoechoic fascicles giving rise to a honeycomb appearance in the transverse plane and banded in the longitudinal plane. Its sonographic appearance resembles that of a tendon, but the sonographic structure of the latter is in fact the opposite, the differentiation of these 2 elements is based on anatomical knowledge but also calls on the dynamic specificity of ultrasound. In fact, muscle contraction maneuvers lead to characteristic tendon mobilization on ultrasound.

Keywords: Ulnar Nerve; Post Traumatic; Ultrasound

1. Fornage BD. “Peripheral nerves of the extremities: imaging with US”. Radiology 167 (1988): 179-182.
2. Valle M and Zamorani MP. “Nerve and blood vessels”. In S Bianchi, C Martinoli eds. Ultrasound of the Musculoskeletal System. Springer-Verlag; Berlin Heidelberg (2007): 45-96.
3. Silvestri E., et al. “Echostructure of Peripheral Nerves: Correlation between US and Histologic Findings and Criteria to Differentiate Tendons”. Radiology 197 (1995): 291-296.
4. Brasseur JL and Sans N. “La place de l’échographie dans les syndromes compressifs du membre supérieur”. Chirurgie de La MainS1 (2004): 27-34.
5. Moussaoui A., et al. “Actualités en échographie de l’appareil locomoteur (Tome 6)”. Sauramps Médical; Montpellier (2009): 235-249.