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Hand > Anatomy > Flashcards

Anatomy Flashcards

1
Q

Extensor tendon compartments (6)

A 
1 - EPB, APL
2 - ECRB, ECRL
3 - EPL
4 - Ext Ind, EDC
5 - EDM
6 - ECU
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2
Q

Ligament assoc w/ Boutonniere deformity

A

Oblique retinacular ligament
Creates DIP extension with tightening
Lateral bands go VOLAR

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3
Q

Ligament assoc w/ swan neck deformity

A

Transverse retinacular ligament

Lateral bands go DORSAL

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4
Q

Where central slip inserts

A

P2 base

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5
Q

Where lateral band inserts

A

P3

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6
Q

Supply of deep palmar arch

A

Radial artery

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7
Q

Supply of superficial palmar arch

A

Ulnar artery

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8
Q

Artery-nerve relationship in palm

A

Artery is VOLAR

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9
Q

Artery-nerve relationship in digits

A

Artery is DORSAL (D=D)

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10
Q

Source of princeps pollicis artery

A

Deep palmar arch
Runs between 1st dorsal IO + adductor pollicis
Supplies ULNAR side of thumb

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11
Q

Relationship of deep + superficial palmar arches

A

Deep is PROXIMAL

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12
Q

Source of digital arteries

A

Superficial palmar arch

Dominant arteries are closer to midline

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13
Q

Ligament assoc w/ thumb CMC arthritis

A

Anterior oblique ligament

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14
Q

Which tendon has 2 slips in DeQuervain’s

A

APL

EPB is DORSAL (ULNAR)

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15
Q

AIN innervation

A

IF+LF FDP
FPL
Pronator quadratus

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16
Q

MC muscle attachments

A 
MC1 = APL, opponens pollicis
MC2 = ECRL
MC3 = ECRB
MC5 = ECU, opponens minimi
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17
Q

What recovers first after nerve injury

A

Sympathetic activity

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18
Q

Gap needed to do autograft nerve repair

A

> 2.5-3 cm

19
Q

Blood supply for gastroc flap

A

Sural artery

20
Q

Blood supply for gracilis free flap

21
Q

Blood supply for lateral arm flap

A

Posterior radial collateral artery

22
Q

Blood supply for radius vascular flap (for scaphoid)

A

1-2 intercompartmental supra-retinacular artery

23
Q

Radial nerve innervation (BBEAT)

A 
BR
Brachialis
ECRL
Anconeus
Triceps
24
Q

PIN innervation (7 E’s, AS)

A 
ECRB
EDC
EDM
ECU
EPB
EPL
EIP
APL
Supinator
25
Q

Median nerve innervation in the hand (OLAF)

A

Opponens pollicis
Lumbricals 1+2
APB
FPB (superficial head)

26
Q

Ulnar nerve innervation in the hand (OIF A FLAP)

A

Opponens minimi
IO
FDMB

Adductor pollicis

FPB (deep head)
Lumbricals 3+4
Adductor minimi
Palmaris brevis

27
Q

Which finger flexor has dual innervation

A

FDP (medial IF/LF, ulnar RF/SF)

FDS all median

28
Q

Blood supply to scaphoid

A

Dorsal carpal branch from radial artery - proximal 80%

29
Q

TFCC components (6)

A 
R-U ligaments (Dorsal + volar)
Central articular disc
Meniscus homolog
Ulnar collateral ligament
ECU subsheath
Origin of U-L and U-T ligaments
30
Q

What is space of Poirier

A

Between RSC and long Radiolunate (RLT) ligaments

Where lunate dislocates

31
Q

Primary carpal stabilizer after PRC

A

Radioscaphocapitate

32
Q

What is ligament of Testut and Keuntz

A

Radioscapholunate
NOT A TRUE LIGAMENT
NV conduit

33
Q

What is Bunnel’s test

A

For Intrinsic vs extrinsic tightness

PIP tight with MCP extended = intrinsics
PIP tight with MCP flexed = extrinsics

34
Q

Finger flexor with a shared muscle belly

35
Q

Relationship of intrinsic tendons to transverse MC ligament (I-D)

A

Lumbricals go VOLAR

IO go DORSAL (I-D)

36
Q

What is the most radial structure in the carpal tunnel

37
Q

IO origin/insertion

A

Origin: MC
Insertion: P1 base + ext mechanism

38
Q

Lumbrical origin/insertion

A

Origin: FDP (radial side)
Insertion: Lateral bands (radial side)

39
Q

Blood supply for lat dorsi flap

A

Thoracodorsal artery

40
Q

Blood supply for anterolateral thigh flap

A

Descending branch of lateral femoral circumflex artery

41
Q

Endoneurium

A

Covers axons

42
Q

Perineurium

A

Covers fascicles (groups of axons)

43
Q

Epineurium

A

Covers groups of fascicles

Hand (6 decks)

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