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Clinical Anatomy > Anatomy - Wrist & Hand - Flexors > Flashcards

Anatomy - Wrist & Hand - Flexors Flashcards

1
Q

Attachments of the Transverse Carpal Ligament

A

Pisiform, hook of hamate, tubercle of scaphoid, & Ridge of trapezium

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2
Q

Contents of Carpal Tunnel

A

FPL, median nerve, & FDS & FDP (last 2 share common synovial sheath)

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3
Q

Thumb movements: Concave on convex

A

Flexion/extension

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4
Q

Thumb movements: Convex on concave

A

Abduction/adduction

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5
Q

Dupurtren’s Disease/Contracture

A

Slow onset & contracture of palmar fascia; pull fingers into flexion (MCP and PIP); usually seen in ring &/or little finger; skin adherent to fascia; seen in men more

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6
Q

Camper’s Chiasma

A

FDP passing through split of FDS (distal attachments on MPs of digits 2-5) to distal attachment of DPs of digits 2-5

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7
Q

Trigger Finger

A

Sheath swelling does not allow finger to extend then it suddenly give way

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8
Q

The synovial sheath of which 2 digits would allow the spread of infection to the wrist?

A

1st (thumb) & 5th (pinky)

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9
Q

Flexor Tendon Injury Zone 1

A

FDP only

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10
Q

Flexor Tendon Injury Zone 2

A

FDP & FDS (No Man’s Land) w/scar adhesion problems

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11
Q

Flexor Tendon Injury Zone 3

A

Palm w/lumbrical injury

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12
Q

Flexor Tendon Injury Zone 4

A

Carpal Tunnel w/median nerve injury & scar adhesion problems

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13
Q

Flexor Tendon Injury Zone 5

A

Forearm w/faster healing, but adhesion between tendons & nerve/vascular injury

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14
Q

Superficial Intrinsic Hand Muscles

A

Thenar Compartment (ABductor Pollicis Brevis, Flexor Pollicis Brevis, Opponens Pollicis)

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15
Q

Central Intrinsic Hand Muscles

A

Hypothenar Compartment (ABductor Digiti Minimi, Flexor Digiti Minimi, Oppenens Digiti Minimi)

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16
Q

Deep Intrinsic Hand Muscles

A

Adductor & Interosseous Compartments (ADductor Pollicis & Palmar/Dorsal Interossei)

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17
Q

ABductor Pollicis Brevis - Proximal Attachment(s)

A

Flexor retinaculum & tubercles of the scaphoid & trapezium

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18
Q

ABductor Pollicis Brevis - Distal Attachment(s)

A

Lateral base of P1 of 1st digit

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19
Q

ABductor Pollicis Brevis - Innervation

A

Thenar recurrent branch (of median n.) C8, T1

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20
Q

ABductor Pollicis Brevis - Action

A

ABduct the thumb at the CMC & assist opposition

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21
Q

Flexor Pollicis Brevis - Proximal Attachment(s)

A

Flexor retinaculum & tubercle of the trapezium

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22
Q

Flexor Pollicis Brevis - Distal Attachment(s)

A

Lateral base of P1 of the 1st digit

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23
Q

Flexor Pollicis Brevis - Innervation

A

Thenar recurrent branch (of the median n.) & deep branch ulnar nerve C8, T1

24
Q

Flexor Pollicis Brevis - Action

A

Flex thumb at MCP

25
Q

Opponens Pollicis - Proximal Attachment(s)

A

Flexor retinaculum & tubercle of the trapezium

26
Q

Opponens Pollicis - Distal Attachment(s)

A

Lateral side of 1st MC

27
Q

Opponens Pollicis - Innervation

A

Thenar recurrent branch (of the median n.) C8, T1

28
Q

Opponens Pollicis - Action

A

Opposition of the thumb

29
Q

ABductor Digiti Minimi - Proximal Attachment

30
Q

ABductor Digiti Minimi - Distal Attachment

A

Medial base of P1 of 5th digit

31
Q

ABductor Digiti Minimi - Innervation

A

Deep branch ulnar nerve C8, T1

32
Q

ABductor Digiti Minimi - Action

A

ABduct the 5th digit

33
Q

Flexor Digiti Minimi - Proximal Attachment(s)

A

Flexor retinaculum & hook of hamate

34
Q

Flexor Digiti Minimi - Distal Attachment(s)

A

Medial side of P1 of 5th digit

35
Q

Flexor Digiti Minimi - Innervation

A

Deep branch ulnar nerve C8, T1

36
Q

Flexor Digiti Minimi - Action

A

Flex 5th MCP

37
Q

Opponens Digiti Minimi - Proximal Attachment(s)

A

Flexor retinaculum & hook of hamate

38
Q

Opponens Digiti Minimi - Distal Attachment(s)

A

Medial side of 5th MC

39
Q

Opponens Digiti Minimi - Innervation

A

Deep branch ulnar nerve C8, T1

40
Q

Opponens Digiti Minimi - Action

A

Draws 5th MC anteriorly & supinates it; OPPOSES to thumb

41
Q

4 Lumbrical Muscles - Proximal Attachment(s)

A

Tendons of FDP

42
Q

4 Lumbrical Muscles - Distal Attachment(s)

A

Radial side of extensor mechanism (lateral bands) of digits 2-5 (tendons pass palmar to transverse inter metacarpal ligament)

43
Q

4 Lumbrical Muscles - Innervation

A

Medial 2: Median nerve C8, T1

45
Q

4 Lumbrical Muscles - Action

A

Flex MCPs & extend IPs of digits 2-5

46
Q

ADductor Pollicis - Proximal Attachment(s)

A

Transverse Head: Anterior surface of body of 3rd MC

48
Q

ADductor Pollicis - Distal Attachment(s)

A

Medial side of base of P1 of 1st digit

49
Q

ADductor Pollicis - Innervation

A

Deep branch ulnar nerve C8, T1

50
Q

ADductor Pollicis - Action

A

Adduct the thumb (moves towards 3rd digit); IMPORTANT in pinch grasp

51
Q

Dorsal Interossei - Proximal Attachment(s)

A

Adjacent sides of 2 MCs

52
Q

Dorsal Interossei - Distal Attachment(s)

A

P1s & lateral bands of extensor hood of digits 2-4 (Tendons of interossei pass dorsal to transverse inter metacarpal ligament)

53
Q

Dorsal Interossei - Innervation

A

Deep branch ulnar nerve C8, T1

54
Q

Dorsal Interossei - Actions

A

ABduct the digits to midline (3rd digit); Flex the MCPs & extend the IPs

55
Q

Palmar Interossei - Proximal Attachment(s)

A

Palmar surfaces of 2nd, 4th, & 5th MCs

56
Q

Palmar Interossei - Distal Attachment(s)

A

Bases of P1s & lateral bands of extensor hood of 2nd, 4th, & 5th digits

57
Q

Palmar Interossei - Innervation

A

Deep branch ulnar nerve C8, T1

58
Q

Palmar Interossei - Actions

A

ADduct the fingers to midline (3rd digit); Flex the MCPs & extend the IPs (Tendons of interossei pass dorsal to transverse inter metacarpal ligament)

Clinical Anatomy (8 decks)

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