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Superficial flexor muscles of the forearm

Superficial flexor muscles of the forearm

This presentation describes Superficial flexor muscles of the forearm

Dr.Sherif Fahmy

August 02, 2019
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  1. Muscles of the Front of the Forearm (8 muscles-Superficial &

    Deep) ➢2 pronator (teres & quadratus). ➢2 flexor digitorum (superficialis & profundus). ➢2 flexor carpi (radialis & ulnaris). ➢1 flexor pollicis longus. ➢1 Palmaris longus.
  2. Arrangement of Muscles of the front of Forearm Superficial Group

    A- Superficial layer: 1) Pronator teres. 2) Flexor carpi radialis. 3) Palmaris longus. 4) Flexor carpi ulnaris. B- Deep layer: 1) Flexor digitorum superficialis. Deep Group A- Superficial layer: 1) Flexor pollicis longus. 2) Flexor digitorum profundus. B- Deep layer: 1) Pronator quadratus
  3. Medial supracondylar ridge (pronator teres) Front of medial epicondyle (Common

    flexor origin) Medial margin of coronoid process (Flexor digitorum superficialis & pronator teres) Common flexor origin Elbow joint Superior radio-ulnar joint
  4. Anterior oblique line of radius Coronoid process Olecranon process Superior

    radio-ulnar joint Anterior surface of shaft of radius Anterior surface of ulna Interosseous membrane
  5. Tubercle of scaphoid Crest of trapezium Groove of trapezium Pisiform

    bone Hook of hamate metacarpal bones Flexor retinaculum Phalanges
  6. Wrist joint Carpo-metacarpal joint of thumb Metacarpo-phalangeal joint of thumb

    Interphalangeal joint of thumb Proximal interphalangeal joints Distal interphalangeal joint
  7. Common rules of superficial flexors ➢Muscles are named after their

    action. ➢All muscles arises partially or totally from common flexor origin (front of medial epicondyle). ➢All muscles have 2 heads except flexor carpi radialis and palmaris longus. ➢Each 2 headed muscle has a nerve that passes between 2 heads and supplies the muscle. Nerve supply: ➢Median nerve except flexor carpi ulnaris is supplied by ulnar nerve. Common action: ➢All are week flexors of elbow. ➢All are flexors of wrist except pronator teres.
  8. Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris

    Flexor digitorum superficialis Flexor retinaculum Palmar aponeurosis Superficial flexor muscles Med. Lat. Medial epicondyle
  9. Relations of 8 flexor tendons to flexor retinaculum: ➢Tendons of

    flexor digitorum (superficialis & profundus) and flexor pollicis longus pass deep to it. ➢Tendon of palmaris longus passes superficial to it. ➢Tendon of flexor carpi radialis passes through a special compartment in the lateral attachment of the retinaculum. ➢Tendon of flexor carpi ulnaris on its medial margin. ➢Tendons of 2 pronator muscles have no relations.
  10. Superficial (humeral) head Deep (ulnar) head Insertion of pronator teres

    Median nerve Attachments and nerve supply of pronator teres m. From lower part of medial supracondylar ridge and front of medial epicondyle (CFO) From medial margin of coronoid process To pronator tuberosity at middle of lateral surface of radius (at maximum convexity of the shaft of radius). Ulnar artery
  11. Trapezium Flexor retinaculum Special compartment for tendon of flexor carpi

    radialis Med. Lat. tendon of flexor carpi radialis
  12. Nerve supply: -Median nerve. Action: -Weak flexion of wrist and

    elbow. -It makes the palmar aponeurosis more tense to protect underlying vessels and nerves.
  13. Humeral head (from CFO) Ulnar head (medial side of olecranon

    process) Flexor carpi ulnaris m. Pisiform bone Ulnar nerve
  14. Radial head of flexor digitorum superficialis Humero-ulnar head of flexor

    digitorum superficialis Origin of flexor digitorum superficialis Anterior oblique line
  15. Humero-ulnar head Radial head Tendinous arch Flexor retinaculum Insertion of

    flexor digitorum superficialis Flexor digitorum superficialis Attachments of flexor digitorum superficialis
  16. Nerve supply: Median nerve. Action: -Flexion of medial 4 fingers

    at proximal inter- phalangeal joints and metacarpo-phalangeal joints. -Flexion of wrist. -Weak flexion of elbow.