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Muscles of Fore arm
Muscles of fore arm: superficial anterior & deep anterior
 The superficial anterior compartment are the flexor carpi ulnaris,
flexor carpi radialis, palmaris longus, flexor digitorum
superficialis & pronator teres
1. Flexor carpi ulnaris: O – humerus & ulna ; I - metacarpal
2. Flexor carpi radialis: O - humerus ; I - metacarpal
3. Palmaris longus: O - humerus; I – palmar aponeurosis
4. Flexor digitorum superficialis: O – humerus, ulna & radius ; I -
middle phalanges
5. Pronator teres: O - humerus & ulna ; I - radius
 Function or Action: Pronation of the forearm, Flexion and
abduction at the wrist, Flexes the metacarpophalangeal joints and
interphalangeal joints
Muscles of fore arm:
 There are three muscles in the deep anterior forearm:
flexor digitorum profundus, flexor pollicis longus,
and pronator quadratus.
 Flexor digitorum profundus: O - ulna; I - distal
phalanges (2-5)
 Flexor pollicis longus: O - radius ; I - distal phalanx of
thumb
 Pronator quadratus: O - ulna; I - radius
 Function or Action: Flexes the interphalangeal joint and
metacarpophalangeal joint, Pronates the forearm
• Posterior compartment of forearm:
Muscles of hand and Fingers:
• Adductor pollicis
• Palmaris brevis
• Interossei
• Lumbricals,
• Thenar (includes Abductor Pollicis Brevis, Flexor
Pollicis Brevis, Opponens Pollicis)
• Hypothenar muscles(includes Opponens Digiti
Minimi, Abductor Digiti Minimi, Flexor Digiti Minimi
Brevis)
• Origin - Upper extremity, I - Hand and fingers
• Functions:
• Fine movements of the thumb
• Medially rotating and flexing the metacarpal
• Abducts the thumb
• Flexes the metacarpophalangeal (MCP) joint
• Rotates the metacarpal
• Abducts the little finger
• Flexes the MCP joint of the little finger
Muscle forearm & hands By M Thiru murugan.pptx

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Muscle forearm & hands By M Thiru murugan.pptx

  • 2. Muscles of fore arm: superficial anterior & deep anterior  The superficial anterior compartment are the flexor carpi ulnaris, flexor carpi radialis, palmaris longus, flexor digitorum superficialis & pronator teres 1. Flexor carpi ulnaris: O – humerus & ulna ; I - metacarpal 2. Flexor carpi radialis: O - humerus ; I - metacarpal 3. Palmaris longus: O - humerus; I – palmar aponeurosis 4. Flexor digitorum superficialis: O – humerus, ulna & radius ; I - middle phalanges 5. Pronator teres: O - humerus & ulna ; I - radius  Function or Action: Pronation of the forearm, Flexion and abduction at the wrist, Flexes the metacarpophalangeal joints and interphalangeal joints
  • 3.
  • 4. Muscles of fore arm:  There are three muscles in the deep anterior forearm: flexor digitorum profundus, flexor pollicis longus, and pronator quadratus.  Flexor digitorum profundus: O - ulna; I - distal phalanges (2-5)  Flexor pollicis longus: O - radius ; I - distal phalanx of thumb  Pronator quadratus: O - ulna; I - radius  Function or Action: Flexes the interphalangeal joint and metacarpophalangeal joint, Pronates the forearm
  • 5.
  • 7. Muscles of hand and Fingers: • Adductor pollicis • Palmaris brevis • Interossei • Lumbricals, • Thenar (includes Abductor Pollicis Brevis, Flexor Pollicis Brevis, Opponens Pollicis) • Hypothenar muscles(includes Opponens Digiti Minimi, Abductor Digiti Minimi, Flexor Digiti Minimi Brevis)
  • 8. • Origin - Upper extremity, I - Hand and fingers • Functions: • Fine movements of the thumb • Medially rotating and flexing the metacarpal • Abducts the thumb • Flexes the metacarpophalangeal (MCP) joint • Rotates the metacarpal • Abducts the little finger • Flexes the MCP joint of the little finger