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MSK > Hand vessels and nerves > Flashcards

Hand vessels and nerves Flashcards

1
Q

arteries of the hand

A
  1. radial

2. ulnar

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2
Q

superficial palmar arterial arch

A
  • ulnar artery = major contributor
  • central compartment bt palmar aponeurosis and and long digital flexor tendons
  • larger and more distal
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3
Q

deep palmar arterial arch

A
  • radial artery= major contributor
  • located within adductor- innterosseous compartment on surface of metacarpal bones deep to long flexor tendons and adductor pollicis
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4
Q

Radial artery

A
  • gains dorsum of hand at anatomical snuff box
  • passes between heads of 1st dorsal interosseous muscle
  • crosses medially btw adductor pollicis heads
  • anastomose with deep branch of ulnar artery to form deep palmar arterial arch
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5
Q

Branches of radial artery

A
  1. superficial palmar
  2. dorsal carpal
  3. princeps pollicis
  4. radialis indicis
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6
Q

superficial palmar branch of radial artery

A
  • arises before artery goes to back of hand
  • crosses thenar muscles
  • passes superficial to digital flexor tendons
  • anastomose with ulnar artery
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7
Q

dorsal carpal branch of radial artery

A
  • arises near anatomical snuff box
  • deep to extensor tendons
  • forms dorsal carpal arch by anastomosing with like branch on ulnar
  • 3 dorsal metacarpal arteries branch from dorsal arch
  • go to fingers to form dorsal digital arteries
  • *1st dorsal metalcarpal- radial artery
  • **5th dorsal metacarpal- ulnar artery
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8
Q

Princeps pollicis

A
  • arises from radial artery
  • ascends to ulnar side of thumb
  • divides into 2 branches
  • distributes to palmar surface of thumb
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9
Q

radialis indicis

A
  • arises with princeps pollicis from radial artery

- supplies palmar side of index finger

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10
Q

Branches from deep palmar arch

A
  1. palmar metacarpal arteries
    - 3 arteries
    - 2, 3, 4 metacarpsl
    - anastomose with common palmar digital arteries from superficial branch
  2. perforating arteries
    - connects dorsal metacarpal arteries with palmar metacarpal arteries
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11
Q

Ulnar Artery

A
  • crosses wrist lateral to pisiform and superficial to flexor retinaculum
  • accompanies ulnar nerve
  • deep palmar branch to anastomose with deep palmar arch
  • forms superficial palmar arch and anastomose with superficial palmar branch from radial artery
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12
Q

Branches of superficial palamar arch

A
  1. common palmar digital arteries
    - 3 arteries
    - course on surface of long flexor tendons
    - anastomose with palmar metacarpal arteries of deep arch
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13
Q

Proper digital arteries

A
  • 2 to each finger
  • formed of of short trunk of anastomoses with palamr metacarpal arteries from deep arch and common palmar digital arteries from superficial trunk
  • 4 arteries supplied to each finger
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14
Q

Median Nerve

A
  • enters hand through carpal tunnel
  • deep to palmar aponeurosis
  • central compartment
  • radial side of palmaris longs tendon
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15
Q

Branches of medial nerve at hand

A
  1. recurrent (motor) branch
  2. common palmar digital nerve
  3. palmar cutaneous branch
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16
Q

Reccurent (motor) branches of median nerve

A
  • arises directly from median nerve

- innervates thenar compartment

17
Q

Common palmar digital nerve branches of median nerve

A
  • 3 nerves

- supply cutaneous innervation to thumb, 2nd, 3rd, and radial side of 4th digit via proper digital branches

18
Q

palmar cutaneous branch of median nerve

A
  • proximal to flexor retinaculum
  • descend superficial to flexor retinaculum
  • innervates central palm
19
Q

Ulnar nerve

A
  • enters hand with ulnar artery
  • divides into superficial and deep branches
  • also
  • cutaneous palmar branch that started in forearm
  • dorsal cutaneous branch
20
Q

superficial branch of ulnar nerve

A
  • provides common and proper digital branches to 5th and ulnar side of 4th digit
  • commentating branch between 3rd and 4th digit ulnar and median nerve
21
Q

Deep branch of ulnar nerve

A
  • follow deep ulnar branch of artery (superficial to deep palmar arterial arch)
  • innervates
    1. hypothenar muscles
    2, lumbricals 3 and 4
    3. all interossei
    4. adductor pollicis
22
Q

cutaneous palmar branch of ulnar nerve

A
  • arises in forearm
  • enters central palm
  • innervates with cutaneous branch of medial nerve
23
Q

Dorsal cutaneous branch of ulnar nerve

A
  • passes dorsally near styloid process
  • divides into 3 dorsal digital nerve
  • innervates skin on medial dorsum of hand, ulnar side 4th digit and entire 5th digit
24
Q

superficial branch of radial nerve

A
  • hand is limited to superficial radial nerve
  • has 2 branches:
    1. lateral branch
    2. medial branch
25
Q

medial branch of superficial radial nerve

A
  • provdes 4 dorsal digital nerves
  • innervates lateral dorsum of hand, dorsum of ulnar side of thumb, dorsum of index finger, radial half go dorsum of middle finger
  • *distal portions are innervated by median nerve
26
Q

lateral branch of superficial radial nerve

A
  • short course to radial side of thumb

- innervates thumb

MSK (13 decks)

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