Opponens Pollicis

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Original Author(s): Oliver Jones
Last updated: October 12, 2022
Revisions: 3

Original Author(s): Oliver Jones
Last updated: October 12, 2022
Revisions: 3

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The opponens pollicis is a thenar muscle located within the hand. It is the largest of the thenar muscles, and is located underneath the flexor pollcis brevis and abductor pollicis brevis.

  • Attachments: Originates from the tubercle of the trapezium and the associated flexor retinaculum. Inserts onto the lateral margin of the first metacarpal.
  • Actions: Opposition of the thumb
  • Innervation: Median nerve (recurrent branch)
  • Blood supply: Superficial palmar arch

Figure 1 – Palmar view of the thenar muscles.