“…The most common abnormal origins for extra ADM muscle bellies include the tendon of the palmaris longus (SoldadoCarrera, 2000), antebrachial fascia (Nayak and Jiji, 2007), and flexor retinaculum (Bozkurt et al, 2004). Other atypical origins include the flexor carpi radialis (Bakinde et al, 2005), styloid process of the radius (Pasquini and Zaidenberg, 2008) and flexor digitorum superficialis (Nayak and Jiji, 2007). Aberrant origins may in fact be quite common; in a limited study, Perkins and Hast (1993) found that in 10% of evaluated hands, aberrant origins of ADM muscle ADMd, abductor digiti minimi dorsal belly; ADMt, abductor digiti minimi tertius belly; FDM, flexor digiti minimi; P, pisiform bone; dUN, deep branch of the ulnar nerve.…”