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Hand & Wrist Flashcards

1
Q

what tendons are in the superficial layer (4)

A

flexor carpi radialis, flexor carpi ulnaris, palmaris longus, pronator teres

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2
Q

what tendons are in the intermediate layer (1)

A

flexor digitorum superficialis

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3
Q

what tendons are in the deep layer (3)

A

flexor pollicis longus, flexor digitorum profundus, pronator quadratus

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4
Q

what muscles are involved in wrist extension (3)

A

extensor carpi radialis brevis, extensor carpi radialis longus, extensor carpi ulnaris

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5
Q

what muscles are involved with extending the fingers (3)

A

extensor digitorum, extensor digiti minimi, extensor indicis

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6
Q

what muscles are involved with extending the thumb (3)

A

abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus

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7
Q

what are the intrinsic hand muscles (3)

A

intermediate/short hand muscles, thenar eminence, hypothenar eminence

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8
Q

what 4 muscles are categorized as the thenar eminence

A

opponens pollicus, abductor pollicis brevis, flexor pollicis brevis, adductor pollicis

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9
Q

ORIGIN of the opponens pollicis

A

tubercle of trapezium and flexor retinaculum

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10
Q

INSERTION of the opponens pollicis

A

anterolateral aspect of the first metacarpal body

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11
Q

ACTION of the opponens pollicis

A

opposition of the thumb (flexion of CMC joint medially across the palm, abduction of CMC joint)

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12
Q

INNERVATION of the opponens pollicis

A

recurrent branch of the median nerve (c8-t1), and ulnar nerve (c8-t1)

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13
Q

ORIGIN of the abductor pollicis brevis

A

tubercle of scaphoid and trapezium, flexor retinaculum

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14
Q

INSERTION of the abductor pollicis brevis

A

radial side of the proximal phalanx base (thumb)

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15
Q

ACTION of the abductor pollicis brevis

A

adduction at CMC and MCP joints of thumb, assists thumb opposition and IP extension

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16
Q

INNERVATION of the abductor pollicis brevis

A

recurrent branch of median nerve (c8-t1)

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17
Q

ORIGIN of the flexor pollicis brevis

A

superficial head: crest of trapezium and flexor retinaculum
deep head: trapezoid and capitate bones, palmar ligaments of distal row of carpal bones

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18
Q

INSERTION of the flexor pollicis brevis

A

lateral side of proximal phalanx base

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19
Q

ACTION of the flexor pollicis brevis

A

flexion of MP and CMC joints of thumb, assists in thumb opposition

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20
Q

INNERVATION of the flexor pollicis brevis

A

superficial head: recurrent branch of median nerve (c8-t1)
deep head: ulnar nerve (c8-t1)

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21
Q

ORIGIN of the adductor pollicis

A

oblique head: bases of metacarpals 2-3, trapezoid and capitate
transverse head: anterior body of the third metacarpal

22
Q

INSERTION of the adductor pollicis

A

medial side of base of proximal phalanx of thumb, extensor retinaculum

23
Q

ACTION of the adductor pollicis

A

adduction of CMC joint of thumb, assists in thumb MCP adduction and flexion

24
Q

INNERVATION of the adductor pollicis

A

ulnar nerve (c8-t1)

25
what muscles are categorized as in the hypothenar eminence (4)
opponens digiti minimi, abductor digiti minimi, flexor digiti minimi, palmaris brevis (sometimes)
26
ORIGIN of the opponens digiti minimi
hook of hamate, flexor retinaculum
27
INSERTION of the opponens digiti minimi
medial border of metacarpal five
28
ACTION of the opponens digiti minimi
opposition of little finger to thumb (adduction, flexion, lateral rotation)
29
INNERVATION of the opponens digiti minimi
deep branch of ulnar nerve (c8-t1)
30
ORIGIN of the abductor digiti minimi
the pisiform
31
INSERTION of the abductor digiti minimi
medial side of proximal phalanx base of digit five, dorsal expansion of extensor digiti minimi
32
ACTION of the abductor digiti minimi
abduction of digit five, assists opposition with digit five
33
INNERVATION of the abductor digiti minimi
ulnar nerve (c8-t1)
34
ORIGIN of the flexor digiti minimi brevis
hook of the hamate and flexor retinaculum
35
INSERTION of the flexor digiti minimi brevis
medial side of proximal phalanx of digit five
36
ACTION of the flexor digiti minimi brevis
flex and laterally rotate the 5th metacarpal about the 5th CMC joint, assists opposition in digit five
37
INNERVATION of the flexor digiti minimi brevis
ulnar nerve (c8-t1)
38
what are the two intermediate (short muscles), how do we describe them?
lumbricals (flex MCP with IP extended), interossei (palmar and dorsal, adduction or abduction of some fingers, flexion of MCP with IP extended
39
ORIGIN of the lumbricals
single head from radial side of FDP 1+2, 3+4 from adjacent sides
40
INSERTION of the lumbricals
lateral side of extensor expansion
41
ACTION of the lumbricals
flex the MCP joints and extend the PIP and DIP joints, coordinating with other hand muscles
42
INNERVATION of the lumbricals
1+2: median nerve 3+4: ulnar nerve
43
ACTION of the dorsal interossei
to abduct fingers around digit 3, flex MCP while extending IPs and the ulnar nerve
44
ORIGIN of the palmar interossei
shaft of metacarpals 2, 4 and 5 (capitate and hamate)
45
INSERTION of the palmar interossei
bases of proximal phalanxes 2, 4 and 5, extensor expansions
46
ACTION of the palmar interossei
adduct fingers forward
47
INNERVATION of the palmar interossei
ulnar nerve (c8-t1)
48
where do the flexor carpi ulnaris and abductor digiti minimi attach to on the pisiform
the volar surface
49
what is jersey finger classified as
injury to a FDP tendon at its point of attachment-the distal phalanx causes partial or complete rupture of the FDP tendon near its attachment point
50
what is mallet finger
finger deformity caused when the extensor tendon is damaged
51
what is carpal tunnel syndrome
compression of the median nerve which goes through the carpal tunnel in the wrist, causes tingling, numbness and pain

MSA (13 decks)

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