DEEP POSTERIOR COMPARTMENT OF FOREARM-SUPINATOR

SUMMARY

TIP: EPL, EI, SUPINATOR arise from the ulna

1. O: deep part - supinator crest of ulna. Superficial part - lateral epicondyle of humerus, radial collateral ligament & behind supinator crest of ulna. 2. I: posterior, lateral & anterior surfaces of proximal 1/3 of radius.
3. NS: posterior interosseous branch of radial n.
4. A: supinates forearm.



Image: Supinator muscle. Netter. (2014). Atlas of Human Anatomy, Sixth Edition. 6th ed. Elsevier.

Reference(s)

R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.