Flexor Digitorum Profundus

Parent Structures

• Deep Anterior Muscles of the Forearm

Proximal/Superior Attachment

• Coronoid Process - Medial Side
• Ulna - Upper three quarters of the anterior and medial surfaces

Distal/Inferior Attachment

• Base of 2nd Distal Phalanx of the Hand
• Base of 3rd Distal Phalanx of the Hand
• Base of 4th Distal Phalanx of the Hand
• Base of 5th Distal Phalanx of the Hand

Attaching Structures as Origin

• 1st Lumbrical of the Hand - Lateral Side of the Tendon to 2nd Phalanx
• 2nd Lumbrical of the Hand - Lateral Side of the Tendon to 3rd Phalanx
• 3rd Lumbrical of the Hand - Lateral Side of the Tendon to 4th Phalanx Medial Side of the Tendon to 3rd Phalanx
• 4th Lumbrical of the Hand - Lateral Side of the Tendon to 5th Phalanx Medial Side of the Tendon to 4th Phalanx

Joint Actions

• Agonist
  • 2nd Metacarpophalangeal Joint (2nd MCP)
    • Flexion
  • 3rd Metacarpophalangeal Joint (3rd MCP)
    • Flexion
  • 4th Metacarpophalangeal Joint (4th MCP)
    • Flexion
  • 5th Metacarpophalangeal Joint (5th MCP)
    • Flexion
  • DIP of the 2nd Phalanx of the Hand
    • Flexion
  • DIP of the 3rd Phalanx of the Hand
    • Flexion
  • DIP of the 4th Phalanx of the Hand
    • Flexion
  • DIP of the 5th Phalanx of the Hand
    • Flexion
  • PIP of the 2nd Phalanx of the Hand
    • Flexion
  • PIP of the 3rd Phalanx of the Hand
    • Flexion
  • PIP of the 4th Phalanx of the Hand
    • Flexion
  • PIP of the 5th Phalanx of the Hand
    • Flexion
  • Wrist
    • Flexion - After fingers fully flexed

Nerve Innervation

• Median Nerve
• Ulnar Nerve