Flexor Digitorum Superficialis

• O (origin):

  Medial head:

  • Common flexor origin
  • ulnar collateral ligament
  • sublime tubercle (on medial coronoid process of ulna)

  A) Flexor Digitorum Superficialis

  B) medial

  
• O (origin):

  Lateral head:

  • upper 2/3 of anterior border of radius (anterior to oblique line)

  A) Flexor Digitorum Superficialis

  B) lateral

  
• R (direction):

  • Distally and slightly laterally

  A) Flexor Digitorum Superficialis

  
• A (actions):

  • Flexion of proximal interphalangeal, metacarpophalangeal and wrist joints

  A) Flexor Digitorum Superficialis

  
• NS (nerve supply):

  • Median nerve (C5 - T1)

  A) Flexor Digitorum Superficialis

  
• I (insertion):

  • Forms 4 tendons that insert into palmar aspect of base of middle phalanx of 4 medial fingers

  A) Flexor Digitorum Superficialis