Yellow highlighted points
How many joints are in the wrist and hand?
20
what joints are in the thumb?
CMC > MCP > IP
actions of elbow?
Flex and extend
ulnar nerve injury?
Loose ability to grip
what joints are in the fingers?
MCP> PIP >DIP
opponens digiti minimi
OPM rotates 5th finger so the pinky and thumb can meet for opposition
hypo thenar muscles
abductor digit minimi flexor digit minimi opponens digiti minimi palamr interossi dorsal interossi dorsal interossi lumbricals palamr apnerosis extensor retinaculum
Thenar muscles
abductor pollicis brevis flexor pollicis brevis opponens pollicis
dorsal interossi
abducts finger
flexor digitorum superficilais
bends fingers @ PIP
Palamar interossi
big pad adducts digits
purpose of elbow?
bring hand closer to body ex: feed and brush teeth
extensor digitorum
cannot act alone, needs interossi extends fingers
injury to musculocutaneous nerve?
cannot flex elbow
ulnar nerve injury
claw hand
radial nerve injury or spinal injury?
could not extend elbow because it would effect triceps
extensor indicis
extends index fingers @ MP joint
extensor carpi radalis brevis
extends wrist in midline
extensor digiti minimi
extension of pinky @ MP joint
anatomical snuffbox
extensor pollicis longus extensor pollicis brevis abductor pollicis longus adductor pollicis
flexor carpi ulnaris
flex in ulnar direction adducts with extensor carpi ulnaris
flexor carpi radialis
flex wrist radially abduct with extensor carpi radialis longus
flexor digiti minimi
flexes 5th metacarpal
scapular depression transfer
general stiffness and flexion contractures
median nerve injury
hand of benediction
tendesis grasp
injury @c6 finger paralysis teach functional grasp fingers pull up into ball activer wrist extension
intrinsic muscles of hand?
inside of hand fine motor
what is the most commonly dislocated carpal bone?
lunate
Finger joints
mcp > pip > dip
fractionation
move fingers independently
extensor carpi radialis longus
moves wrist in radial direction
flexor pollicis brevis
opposition simultaneous combo movement of abduction, flexion, and medial rotation
extrinsic muscles of hand?
outside of hand force
pinky abduction
parallel to palm stabalizer
thumb abduction
perpendicular to palm
Bicept brachi?
powerful supinator of forearm elbow flexor
radial section of palm
precision
function of radius and ulna?
pronation and supination
abductor pollicis longus
radial thumb abduction and extension
cubital tunnel syndrome
ring and small fingers numb and tingley due to increased pressure and tension on the ulnar nerve while elbow is flexed
what is the most common carpal fracture?
scaphoid
opponens pollicis
simlutaneous combo of abduction, flexion and medial rotation
lumbricals
simultaneous flexion of MP joints and extension of IP
palmaris brevis
small muscle in hand deepens grip with hypothenar muscles
abductor digiti minimi
stablaizer abduction of pinky
ulnar section of palm
strength
Significance of finger tendons?
the fingers do not have any muscles only tendons
muscles of elbow?
tricepts brachi (e) ancoenus (e) brachialis (f) brachioradialis (f) bicepts brachi (f)
palmaris longus
used for tendon repairs b/c you dont really need it and its long/skinny
flexor digitorum profundus
works with flexor digitorum superficialis to flex @ DIP
radial nerve injury
wrist drop
