Abductor Digiti Minimi (Hand)

Original Editor - Nikhil Benhur Abburi

Top Contributors - Nikhil Benhur Abburi and Kim Jackson


Abductor digiti minimi[1]

It is a small muscle situated on the ulnar border of the hand forming the hypothenar eminence


Pisiform and tendon of flexor carpi ulnaris, pisohamate ligament


Ulnar side of base of proximal phalanx of little finger


Ulnar nerve (C8, T1)


Ulnar artery


Abucts the little finger(5th)

Clinical relevance

In rare conditions the abductor digiti minimi may have two fascicles[2] passing on ulnar nerve which may cause entrapment[3]


Patients forearm in supination, wrist in neutral and instruct the patient to spread his/her fingers. hold them and don't allow to open up


  1. https://commons.wikimedia.org/wiki/File:Musculus_abductor_digiti_minimi_(Hand).png
  2. J R Sanudo, R M Mirapeix, and B Ferreira. A rare anomaly of abductor digiti minimi. Journal of anatomy 1993 Jun; 182(Pt 3): 439–442.
  3. Horst Claassen,Oliver Schmitt,Marko Schulze &Andrew Wree. Variation in the hypothenar muscles and its impact on ulnar tunnel syndrome Surgical and Radiologic Anatomy volume 35, pages 893–899(2013)
  4. My rehab patient. Abductor digiti minimi control. Available from: https://www.youtube.com/watch?v=15ojdmKkueM [last accessed 31/3/2020]
  5. My rehab patient. Abductor digiti minimi resistance Available from: https://www.youtube.com/watch?v=S0aHLPfcDtY [last accessed 31/3/2020]