Skip to content

Opponens digiti minimi




Opponens digiti minimi - anterior view
Opponens digiti minimi - medial view

General information

  • This section is strictly limited to anatomy, you might be looking for clinical relevant information which is found under the clinical chapters -- muscles section, click here to go to that page


  • Lateral part is superficial


  • Flexor retinaculum
  • Os hamatum


  • 5. metacarpal
    • Ulnar side

Main function

  • Little finger CMC
    • Opposition

Secondary function

  • Lillefinger CMC
    • Flexion
    • Adduction
    • Lateral rotation

Nerve innervation

  • Segmental
    • C8-Th1
  • Peripheral
    • Ulnar nerve

Arterial supply

  • Ulnar artery


  • Patient position
    • Sitting or supine
  • Place your fingers laterally on the hypothenarf
  • Ask the patient to perform opposition of the little fingers CMC-joint while you feel for the contraction in the muscle

Strength test

  • Patient position
    • Sitting or supine
  • Ask the patient to hold the little finger in a position of opposition
  • Give resistance towards the palmar surface of the 5.metacarpal
    • Do it in a direction which takes aim to flaten the cavity of the palm