Accessory Fasciculus of Abductor Digiti Minimi

Aim and Objective: to study the variations of Abductor Digiti Minimi, whether absent,or present, and its presence or absence of one to three bellies, its variation in origin. Materials and methods: 48 upperlimbs from 24 cadavers were dissected to observe the variations. Results: During routine dissection of undergraduates we have come across the presence of this accessory muscle in the wrist when the carpal tunnel is opened. This presents with Abductor Digiti Minimi (ADM) muscle bilaterally, involving ulnar artery (UA) and ulnar nerve (UN) distribution.