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Anatomy > Wrist And Hand > Flashcards

Wrist And Hand Flashcards

1
Q

Carpal bones

A

Radiocarpal joint
Intercarpal joint
Carpometacarpal joint

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2
Q

Carpal bones - scaphoid

A

Proximal row of the carpal bones
Lateral to lunate

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3
Q

Carpal bones - lunate

A

Proximal row of carpal bones
Lateral to triquetrum
Medial to scaphoid

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4
Q

Carpal bones - triquetrum

A

Proximal row of carpal bones
Medial to lunate

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5
Q

Carpal bones - pisiform

A

Small, pea-shaped sesamoid bone
Lies within the tendon of flexor carpi Ulnaris

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6
Q

Carpal bones - trapezium

A

Distal row of carpal bones
Lateral to trapezoid

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7
Q

Carpal bones - trapezoid

A

Distal row of carpal bones
Medial to trapezium
Lateral to capitate

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8
Q

Carpal bones - capitate

A

Distal row of carpal bones
Medial to trapezoid
Lateral to hamate

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9
Q

Carpal bones - hamate

A

Distal row of carpal bones
Medial to capitate

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10
Q

Metacarpals

A

Five miniature long bones in the palm of the hand
Base-shaft-head
Carpometacarpal joints
Intermetacarpal joints
Metacarpophalangeal joints

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11
Q

Phalanges

A

Fourteen miniature long bones of the digits
Three in each finger and two in the thumb
Proximal-middle-distal
Metacarpophalangeal joints
Interphalangeal joints

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12
Q

Capsule

A

From radius to ulna and proximal row of carpals
Heavily supported by collateral, palmar and dorsal ligaments
Synovial fold - proprioceptive role and sensory function ads it has lots of nerves

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13
Q

Ligaments

A

Ulnar collateral and radial collateral ligaments - prevents medial and lateral movements
Palmar and distal Radiocarpal ligaments
Allows the hand to follow the rotation of the radius around the ulna

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14
Q

Blood supply

A

Radial and ulnar arteries - dorsal and palmar carpal arches
Median artery branch of the brachial artery
Median Cubital vein - branch from the basilic vein and turns into the median vein

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15
Q

Nerve supply to palmar aspect

A

Median nerve - under carpal tunnel, thumb, index, middle and half of the ring finger
Ulnar nerve - superficial branch: little and half of the ring finger, deep branch: medial Lumbrical, adductor pollicis, interossei, hypothenar muscles, flexor pollicis brevis

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16
Q

Nerve supply to dorsum aspect

A

Radial nerve - thumb, index, middle and half of the ring finger
Ulnar nerve - little and half of the ring finger, palmar ulnar nerve does the fingertips
Median nerve - palmar branch comes over and does fingertips

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17
Q

Wrist flexors - flexor carpi Ulnaris (FCU)

A

O - common flexor tendon
I - 5th metacarpal, pisiform, hamate
A - flexes and adducts the wrist

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18
Q

Wrist flexors - flexor carpi Radialis (FCR)

A

O - common flexor tendon
I - 2nd metacarpal, base
A - flexed the wrist and abducts the hand

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19
Q

Wrist extensors - extensor carpi Ulnaris (ECU)

A

O - common extensor tendon
I - 5th metacarpal, base
A - extends and adducts the wrist

20
Q

Wrist extensors - extensor carpi Radialis brevis (ECRB)

A

O - common extensor tendon
I - 3rd metacarpal
A - extends and adducts the wrist

21
Q

Wrist extensors - extensor carpi Radialis longus (ECRL)

A

O - humerus, supracondylar ridge
I - 2nd metacarpal
A - extends and abducts the wrist

22
Q

Wrist adductors - flexor carpi Ulnaris (FCU)

A

O - common flexor tendon
I - 5th metacarpal, pisiform, hamate
A - flexes and adducts the wrist

23
Q

Wrist adductors - extensor carpi Ulnaris (ECU)

A

O - common extensor tendon
I - 5th metacarpal, base
A - extends and adducts the wrist

24
Q

Wrist abductors - flexor carpi Radialis (FCR)

A

O - common flexor tendon
I - 2nd metacarpal, base
A - flexed the wrist and abducts the hand

25
Q

Wrist abductors - extensor carpi Radialis brevis (ECRB)

A

O - common extensor tendon
I - 3rd metacarpal
A - extends and adducts the wrist

26
Q

Wrist abductors - extensor carpi Radialis longus (ECRL)

A

O - humerus, supracondylar ridge
I - 2nd metacarpal
A - extends and abducts the wrist

27
Q

Intercarpal joint

A

Between the carpal bones
Plane synovial joint
Small gliding movement s augment wrist movements

28
Q

Carpometacarpal joint

A

Between the carpal bones and metacarpals
Plane synovial joint (except the thumb)
More movement at medial Carpometacarpal joints

29
Q

Intermetacarpal joint

A

Between the metacarpals
Plane synovial joint
Small gliding movements

30
Q

Metacarpophalangeal joint

A

Between the metacarpals and phalanges
Condyloid synovial joint
Flexion, extension, abduction and adduction

31
Q

Interphalangeal joint

A

Between the phalanges
Hinge synovial joint
Flexion and extension

32
Q

Carpometacarpal joint of the thumb

A

Between the trapezium (carpal bone) and the metacarpal of the thumb
Saddle synovial joint
Mobility is due to the shape of articular surfaces
Abduction, adduction, extension, flexion, opposition and reposition

33
Q

Thenar group - adductor pollicis

A

O - 3rd metacarpal
I - 1st proximal phalanx
A - adducts the thumb

34
Q

Thenar group - abductor pollicis brevis

A

O - flexor Retinaculum, trapezium
I - 1st proximal phalanx
A - abducts the thumb

35
Q

Thenar group - Opponens pollicis

A

O - flexor Retinaculum, trapezium
I - 1st proximal phalanx
A - opposes the thumb

36
Q

Thenar group - flexor pollicis brevis

A

O - flexor Retinaculum, trapezium, trapezoid, capitate
I - 1st proximal phalanx
A - flexes the thumb

37
Q

Hypothenar group - abductor Digiti Minimi

A

O - flexor Retinaculum, pisiform
I - 5th proximal phalanx
A - abducts the little finger

38
Q

Hypothenar group - flexor Digiti Minimi brevis

A

O - flexor Retinaculum, hamate
I - 5th proximal phalanx
A - flexes the little finger

39
Q

Hypothenar group - Opponens Digiti Minimi

A

O - flexor Retinaculum, hamate
I - 5th metacarpal
A - opposes the little finger to the thumb

40
Q

Mid palmar group - palmar interossei

A

O - metacarpals 2-5
I - proximal phalanges 2-5
A - adducts and flex the Metacarpophalangeal joints of fingers 2-5 and extends the interphalangeal joints

41
Q

Mid palmar group - dorsal interossei

A

O - metacarpals 2-5
I - proximal phalanges 2-5
A - abducts and flexes the Metacarpophalangeal joints of fingers 2-4 and extends the interphalangeal joints

42
Q

Mid palmar group - lumbricals

A

O - flexor Digitorum Profundus
I - proximal phalanges 2-5
A - flex the Metacarpophalangeal joints of fingers 2-5 and extends the interphalangeal joints of fingers 2-5

43
Q

Extensor hood

A

Across the middle phalanx
Extensor Digitorum tendon divides into three slips
One inserted into middle phalanx
Two join together and insert on distal phalanx
Allows muscles to have extensive action at the finger

44
Q

Flexor tendons to fingers

A

Flexor Digitorum Profundus tendon found deep anteriorly
Flexor Digitorum Superficialis tendon divides to control all the fingers - splits to make a hole which allows the flexor Digitorum Profundus to run through
Vincula brevia and vinculum longus stabilises the tendon of flexor Digitorum Profundus and Superficialis

45
Q

Anatomical snuff box

A

Medial side of the hand
Extensor pollicis longus; inserts at base of distal phalanx and extensor pollicis brevis tendons; inserts at base off proximal phalanx

46
Q

Carpal tunnel

A

Tight space
Flexor Digitorum Superficialis and Profundus, flexor pollicis longus and median nerve runs through
Flexor Retinaculum - transverse carpal ligament

Anatomy (9 decks)

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