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Deep_Muscles_of_Flexor_Compartment_of_Forearm.pdf

 Deep_Muscles_of_Flexor_Compartment_of_Forearm.pdf

A989e860ff15c2645b08b0d06920b504?s=128

Dr.Sherif Fahmy

August 15, 2019
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Transcript

  1. Deep Muscles of Flexor (Anterior) Compartment of Forearm

  2. 1- Flexor digitorum profundus. 2- Flexor pollicis longus. 3- Pronator

    quadratus.
  3. Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris

    Flexor digitorum superficialis (cut) Flexor digitorum profundus Flexor pollicis longus Pronator quadratus Flexor retinaculum Lumbricals Deep muscles of forearm Lateral Medial
  4. Flexor digitorum profundus Flexor pollicis longus Pronator quadratus Origin of

    flexor digitorum profundus Ulnar aponeurosis Origin of pronator quadratus Origin of flexor pollicis longus m. Insertion of pronator quadratus m. Interosseous membrane
  5. Flexor Digitorum Profundus

  6. Interosseous membrane Flexor digitorum profundus from upper ¾ of anterior

    and medial surfaces of ulna (main origin) Flexor retinaculum Ulnar aponeurosis
  7. Common synovial sheath (ulnar bursa) Flexor retinaculum Synovial sheath Fibrous

    flexor sheath
  8. Tendons of flexor digitorum profundus Tendons of flexor digitorum superficialis

    Lumbricals
  9. Action of flexor digitorum profundus • Flexes all joints of

    the medial four fingers. • Flexes the wrist. Nerve supply -Medial ½ from ulnar nerve. -Lateral ½ from anterior interosseous nerve (branch from median)
  10. Flexor Pollicis Longus

  11. Interosseous membrane Flexor retinaculum Flexor pollicis longus Tendon of flexor

    pollicis longus Upper 2/3 of anterior surface of radius Insertion to palmar aspect of distal phalanx of thumb
  12. Tendon of flexor carpi radialis Flexor retinaculum Tendon of flexor

    pollicis longus Tendons of flexor digitorum superficialis Tendons of flexor digitorum profundus
  13. Action of flexor pollicis longus • Flexes all joints of

    the thumb. • Assists in flexion of the wrist. Nerve supply -Anterior interosseous nerve (branch from median)
  14. Pronator Quadratus Muscle

  15. Pronator Quadratus M. Origin: from oblique ridge on the lower

    ¼ of anterior surface of the shaft of ulna Insertion: into lower ¼ of anterior and medial surfaces of radius
  16. Pronator quadratus m.

  17. Action of pronator quadratus Pronation of forearm on radioulnar joints.

    Nerve supply -Anterior interosseous nerve (branch from median)