INTRINSIC MUSCLES OF THE HAND-PALMAR INTEROSSI
From NeuroRehab.wiki
SUMMARY
1. O: palmar surface of 2, 4, 5 metacarpals.
2. I: bases of proximal phalanx and extensor expansion of digits 2, 4, 5.
3. NS: deep branch of ulnar n.
4. BS: deep palmar arch.
5. A: adducts digits towards the axial line (middle finger) of the hand, flex digits at the MCPJ and extend at IPJ.
Image: Case courtesy of OpenStax College, Radiopaedia.org. From the case rID: 44017 [Accessed 19 Apr. 2020].
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.
