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Structure and Function > Forearm, Wrist, hand > Flashcards

Forearm, Wrist, hand Flashcards

1
Q

Forearm bones: Radius and Ulna

A
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2
Q

Forearm Joints

Radioulnar

Radiocarpal

A
  • Proximal and distal radioulnar joints = synovial joint
    • Pronate (cross)
    • Supinate
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3
Q

Forearm Joints

Radioulnar

Radiocarpal

A
  • Radiocarpal joint
    • Flex/extend
    • Abduct/adduct
    • Circumduct
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4
Q

Anterior Forearm Muscles

Superficial muscles

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Intermediate muscles

Flexor digitorum superficialis

Deep muscles

Pronator quadratus

Flexor digitorum profundus

Flexor pollicus longus

A
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5
Q

Anterior Forearm Muscles

Superficial muscles

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Intermediate muscles

Flexor digitorum superficialis

Deep muscles

Pronator quadratus

Flexor digitorum profundus

Flexor pollicus longus

A
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6
Q

Anterior Forearm Muscles

Superficial muscles

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Intermediate muscles

Flexor digitorum superficialis

Deep muscles

Pronator quadratus

Flexor digitorum profundus

Flexor pollicus longus

A
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7
Q

Anterior Forearm Muscles

Superficial muscles

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Intermediate muscles

Flexor digitorum superficialis

Deep muscles

Pronator quadratus

Flexor digitorum profundus

Flexor pollicus longus

A
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8
Q

Anterior Forearm Muscles

Superficial muscles

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Intermediate muscles

Flexor digitorum superficialis

Deep muscles

Pronator quadratus

Flexor digitorum profundus

Flexor pollicus longus

A
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9
Q

Anterior Forearm Nerve

A
  • Median* > anterior interosseus
  • Ulnar
    • Flexor carpi ulnaris
    • Ulnar half of flexor digit. Profundus
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10
Q

Anterior Forearm Blood Supply

A
  • Radial artery
  • Ulnar artery
  • Interosseous artery
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11
Q

Posterior Forearm Muscles

Superficial

Brachioradialis

Extensor radialis longus

Extensor carpi radialis brevis

Extensor digitorum

Extensor digiti minimi

Extensor carpi ulnaris

Deep

Supinator

Abductor pollicis longus

Extensor pollicis brevis

Extensor pollicis longus

Extensor indicis

A
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12
Q

Posterior Forearm Muscles

Superficial

Brachioradialis

Extensor radialis longus

Extensor carpi radialis brevis

Extensor digitorum

Extensor digiti minimi

Extensor carpi ulnaris

Deep

Supinator

Abductor pollicis longus

Extensor pollicis brevis

Extensor pollicis longus

Extensor indicis

A
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13
Q

Posterior Forearm Muscles

Superficial

Brachioradialis

Extensor radialis longus

Extensor carpi radialis brevis

Extensor digitorum

Extensor digiti minimi

Extensor carpi ulnaris

Deep

Supinator

Abductor pollicis longus

Extensor pollicis brevis

Extensor pollicis longus

Extensor indicis

A
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14
Q

Posterior Forearm Muscles

Superficial

Brachioradialis

Extensor radialis longus

Extensor carpi radialis brevis

Extensor digitorum

Extensor digiti minimi

Extensor carpi ulnaris

Deep

Supinator

Abductor pollicis longus

Extensor pollicis brevis

Extensor pollicis longus

Extensor indicis

A
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15
Q

Posterior Forearm Muscles

Superficial

Brachioradialis

Extensor radialis longus

Extensor carpi radialis brevis

Extensor digitorum

Extensor digiti minimi

Extensor carpi ulnaris

Deep

Supinator

Abductor pollicis longus

Extensor pollicis brevis

Extensor pollicis longus

Extensor indicis

A
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16
Q

Posterior Forearm Nerve

A
  • Radial nerve
    • Bracioradialis
    • Extensor carpi radialis longus
  • Deep radial nerve
    • Remaining muscles
  • Posterior interosseous nerve?
17
Q

Posterior Forearm Blood Supply

A
  • Posterior interosseous arteries
  • Allen’s test
18
Q

Distal Forearm

A

Distal forearm anterior

  • Radial artery
  • Ulnar artery
  • Median nerve > laterally palmaris longus tendon

Distal forearm posterior

  • Extensor retinaculum / posterior annular ligaments
    • Holds digit extensor tendons in place
19
Q

Wrist/Hand Nerves and Bones

A

Wrist/hand nerve

  • Ulnar nerve > deep ulnar nerve > primary motor nerve to instrinsic hand muscles
  • Median nerves > primary sensory nerve to palmar hand

Wrist/hand bones

  • Carpal bones (8)
    • Scaphoid – distal radius
    • Lunate – distal radius
    • Triquetrum
    • Pisiform – tendon of flexor carpi ulnaris
    • Trapezium – thumb metacarpal
    • Trapezoid
    • Capitate
    • Hamate – ulnar nerve and artery pass lateral
  • Metacarpal (5)
  • Phalanges (14)
20
Q

Wrist/Hand Joints

Intercarpal Joint

Metacarpophalangeal Joint

Carpometacarpal Joint (Thumb)

Interphalangeal

A
21
Q

Wrist/Hand Joints

Intercarpal Joint

Metacarpophalangeal Joint

Carpometacarpal Joint (Thumb)

Interphalangeal

A
  • Flex/extend
  • Abduct/adduct
  • Circumduct
22
Q

Wrist/Hand Joints

Intercarpal Joint

Metacarpophalangeal Joint

Carpometacarpal Joint (Thumb)

Interphalangeal

A
  • Thumb carpometacarpal Joint
    • Flex/extend
    • Abduct/adduct
    • Oppose/repose
23
Q

Wrist/Hand Joints

Intercarpal Joint

Metacarpophalangeal Joint

Carpometacarpal Joint (Thumb)

Interphalangeal

A
  • Interphalangeal
    • Proximal (PIP)
    • Distal (DIP)
24
Q

Wrist/Hand Fascia

A
  • Palmar aponeurosis
    • Facilitates grip
  • Flexor retinaculum (anterior)
    • Roof of carpal tunnel
      • 9 tendons
      • Median nerve
        • Inflammation/Compression > Carpal Tunnel Syndrome
          • Tx: flexor retinaculum incision
  • Extensor Retinaculum (posterior)
25
Q

Hand muscles (18)

Thenar

Hypothenar

Digits

A
  • Thenar (3) + 1 adductor
    • Flexor pollicis brevis
    • Abductor pollicis brevis
    • Opponens pollicis
  • Hypothenar (3)
    • Flexor digitorum minima
    • Abductor digitorum minimi
    • Opponens digitorum minini
  • Digits
    • Lumbercles (4)
    • Interossei (7)
26
Q

Hand muscles (18)

Thenar

Hypothenar

Digits

A
  • Thenar (3) + 1 adductor
    • Flexor pollicis brevis
    • Abductor pollicis brevis
    • Opponens pollicis
  • Hypothenar (3)
    • Flexor digitorum minima
    • Abductor digitorum minimi
    • Opponens digitorum minini
  • Digits
    • Lumbercles (4)
    • Interossei (7)
27
Q

Hand muscles (18)

Thenar

Hypothenar

Digits (lumbricals)

A
  • Thenar (3) + 1 adductor
    • Flexor pollicis brevis
    • Abductor pollicis brevis
    • Opponens pollicis
  • Hypothenar (3)
    • Flexor digitorum minima
    • Abductor digitorum minimi
    • Opponens digitorum minini
  • Digits
    • Lumbercles (4)
    • Interossei (7)
28
Q

Hand muscles (18)

Thenar

Hypothenar

Digits (interossei)

A
  • Thenar (3) + 1 adductor
    • Flexor pollicis brevis
    • Abductor pollicis brevis
    • Opponens pollicis
  • Hypothenar (3)
    • Flexor digitorum minima
    • Abductor digitorum minimi
    • Opponens digitorum minini
  • Digits
    • Lumbercles (4)
    • Interossei (7)
29
Q

Hand Innervation

Motor C8/T1

Sensory C6, C7, C8

A
  • Motor C8/T1
    • Median nerve
      • 2 lumbricals
      • Thenar muscles
    • Deep ulnar*
      • Adductor pollicis
      • Ulnar 2 lumbricals
      • Hypothenar muscles
      • Interossei
  • Sensory C6, C7, C8
    • Median*
      • Radial 3.5 digits
    • Ulnar
      • Ulnar 1.5 digits
30
Q

Hand Blood Supply

A
  • Radial artery
    • Deep palmar arch
  • Ulnar artery
    • Superficial palmar arch
31
Q

Colle’s Fracture

A
  • FOOSH
  • Proximal radial deviation > dinner fork deformity
32
Q

Scaphoid Fracture

A
  • FOOSH
  • Proximal scaphoid > necrosis

Structure and Function (15 decks)

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