MUSCLES-INTERMEDIATE FLEXOR OF FOREARM

SUMMARY

1. Flexor digitorum superficialis: large muscle of the intermediate layer which arises from the common flexor origin, medial ligamentous complex of elbow, sublime tubercle & anterior oblique line of radius.

2. Distally it gives rise to 4 tendons which pass into the hand deep to the flexor retinaculum.

3. Within each finger the tendons form 2 slips which pass around the profundus tendon and then partly reunite before attaching to the sides of the middle phalanx.

4. Supplied by the median nerve.

5. Flexes the wrist ⟹ MCPJ ⟹ PIPJ.

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.