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36 Cards in this Set
- Front
- Back
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flexion of finger MCP
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lumbricals and interossei
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flexion of finger PIPs
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flexor dig superficialis
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flexion of finger DIP
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flexor dig. profundus
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extensor of finger MCP
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extensor dig communis
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extensor of finger PIP
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lumbricals and interossei (central slip)
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extensor of finger DIP
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lumbricals and interossei (terminal slip)
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abduction of finger MCP
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dorsal interossei
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adduction of finger MCP
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palmar interossei
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flexion of thumb MCP
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flexor pollicus brevis
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flexion of thumb IP
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flexor pollicus longus
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extensor of thumb MCP
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extensor pollicus brevis
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extensor of thumb IP
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extensor pollicus longus
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abduction of thumb CMC
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abductor pollicus longus
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abduction of thumb MCP
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abductor pollicus brevis
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adduction of thumb MCP
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adductur pollicus
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opposition of thumb CMC
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opponens pollicus
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contents of carpal tunnel
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4 tendons of flexor dig superficialis
4 tendons of flexor dig profundus 1 tendon of flexor pollicus longus 1 nerve (median) |
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volvar plate injury- what is the finger deformity?
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swan-neck deformity: hyperextention at PIP, flexion at DIP
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define the Boutonniere deformity
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injury/dz disrupts insertion of central slip- PIP hyperflexion, DIP hyperextention
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what will traumatic hyperflexion at DIP joint cause?
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mallet finger (baseball) deformity - rupture of extensor aponeurosis
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trigger finger
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nodule/swelling on superficial flexor tendon (proximal to bifurcation)
repeatedly grabbing objects/ partially lacerated tendon |
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3 insertions on the extensor hood
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long extensor, lumbrical, interosseus
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innervation of thenar group
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recurrent branch of Median
(except deep head of flexor pollicus brevis- thats ulnar) |
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innervation of central group
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deep ulnar nerve
(except for first 2 lumbricals- thats motor branch of dig. nerve) |
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innervation of hypothenar group
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deep ulnar nerve
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what muscles does the deep radial nerve innervate in the hand
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extrinsic extensors of thumb:
extensor pollicus longus (IP) extensor pollicus brevis (MCP) abductor pollicus longus (CMC) + Extensor indicus ext dig communis ext digiti minimi |
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innervation of the flexor muscles of the thumb
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recurrent median (except deep head of flexor pollicus brevis- Ulnar)
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innervation for adduction of the thumb
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ulnar nerve- aductor pollicus
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lumbricals and interossei action and innervation
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Flex MCP
extend PIP, DIP innervated by ulnar nerve (mostly) except 2 lumbricals are innervated by the median |
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extrinsic muscles of the fingers + innervation
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flexor dig superficialis (PIP)- median
flexor dig profundus (DIP)- median + ulnar |
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muscles/groups under ulnar nerve innervation in hand
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hypothenar muscles
all of the central group except for 2 lumbricals (median) deep head of flexor pollicus brevis |
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muscles/groups under recurrent median innervation in hand
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abductors and flexors of the thumb: thenar muscles (except deep head of pollicus brevis), first 2 lumbricals
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thenar muscle group
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abductor pollicus brevis
flexor pollicus brebis opponens pollicus innervation: medial w/on head ulnar |
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boundaries of "snuff box"
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med: extensor pollicus longus
lat: extensor pollicus brevis abductor pollicus longus prox:styloid process distal |
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unique feature of blood supply to scaffoid
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arrives distally: in event of fracture, the proximal bone will lose blood supply and avascularly necross
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muscles innervated by the anterior interossius
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flex dig profundus (also ulnar)
flex pollicis longus flex dig superficialis deep part of wrist |
