Catón Vázquez, Francisco JavierMartínez Sanz, ElenaMorán Morán, JulioLópez Fernández, PedroMurillo González, Jorge Alfonso2024-04-022024-04-022020-12-07Caton J, Martíenz-Sanz E, Morán-Morán J, López-Fernández P, Murillo-González J. An Accessory Abductor Digiti Minimi as Possible Risk Factor of the Median and Ulnar Nerves Compression. Int J Morphol. 2020; 38(6):1555-1559.0717-950210.4067/s0717-95022020000601555https://hdl.handle.net/20.500.14352/102497During routine dissection of a left upper limb of a 68-year-old male human cadaver, an unusual muscle was observed originating from the radius and flexor retinaculum, and continued in the hypothenar region with the muscle belly of the abductor digiti minimi. We checked that it was an accessory abductor digiti minimi (ADM). Its muscular belly was in close relation to the median and ulnar nerves. We review the literature regarding such muscle variations and discuss the potential for compression of the median and ulnar nerves. Although the accessory ADM is usually asymptomatic and only rarely results in nerve compression, it should be taken into account by surgeons when establishing a differential diagnosis in the compression neuropathies of the median and ulnar nerves. An ultrasound scanning can help establish the differential diagnosis.engAttribution-NonCommercial-NoDerivatives 4.0 Internationaljournal articlehttps://www.scielo.cl/scielo.php?pid=S0717-95022020000601555&script=sci_abstractopen access611Accessory abductor digiti minimiEntrapmentMedian nerveUlnar nerveCiencias Biomédicas32 Ciencias Médicas