deep forearm flexors

• Flexor Digitorum Profundus:

  O: Upper 3/4 anterior and medial aspects shaft of ulna

  Middle 1/2 interosseus membrane

  Medial coronoid process of ulna

  R: Distally

  I: Palmar surface of base of distal phalanges of four medial fingers

  A: Flexion of all the joints it crosses (DIP, PIP, MCP and wrist joints)

  NS: Lateral half: Median nerve (C5,6,7,8,T1)

  Medial half: Ulnar nerve ((C7),8,T1)
• Flexor Pollicis Longus:

  O: Anterior surface of radius (inferior to anterior oblique line and superior to pronator quadratus)

  Adjacent interosseus membrane

  R: Distally

  I: Palmar surface of base of distal phalanx of thumb

  A: Flexion of all the joints it crosses (IP, MCP and wrist joints)

  NS: Median Nerve (C5,6,7,8,T1)