OSMOSIS - Bones, Joints, and Muscle movements of wrist Flashcards
types of wrist joints
radiocarpal joints intercarpal joints carpometacarpal joints intermetacarpal joints metacarpophalangeal joints interphalangeal joints
type of radiocarpal joint
condyloid type
contents of radiocarpal joint
radius
scaphoid
lunate
triquetrum
palmar ligament and dorsal ligament extend from..
from distal radius to the 2 rows of carpal bones
function of palmar ligaments
strengthen joint
supinate forearm
function of dorsal ligament
stabilize joint
follows radius during pronation
contents of ulnar collateral ligament of wrist
radial styloid process
scaphoid bone
muscles of the arm that attach to the wrist
the ones with carpi in the name flexor carpi radialis flexor carpi ulnaris extensor carpi radialis longus, brevis extensor carpi ulnaris
muscles for abduction/radial deviation
flexor carpi radialis
extensor carpi radialis longus
extensor carpi radialis brevis
abductor pollicis longus
muscles for adduction/ulnar deviation
flexor carpi ulnaris
extensor carpi ulnaris
radiocarpal joint blood supply
dorsal carpal and palmar carpal arch from the radial and ulnar artery
hiltons law
nerves that innervate the muscles crossing a joint also innervate that joint
4 groups of intercarpal joints
midcarpal joint
joints between carpal bones in proximal row
pisotriquetral joint
joints between carpal bones in distal row
type of joint in intercarpal joints and their function
plane joints
combined movements augment range of motion
content of 1st carpometacarpal joint
metacarpal bone and trapezium
type of joint is 1st carpometacarpal joint
saddle joint
type of joint the rest of the carpometacarpal joints 2-5
plane joints
content of 2nd carpometacarpal joint
trapezoid and 2nd metacarpal
content of 3rd carpometacarpal joint
capitate and 3rd metacarpal
content of 4th and 5th carpometacarpal joint
4th and 5th metacarpals hamate
type of metacarpophalangeal joint
condyloid joint
synovial membrane and joint capsule
movements formed in metacarpophalangeal joint
flexion/extension
adduction/abduction
type of joint in interphalangeal joint
hinge joint
type of movements in interphalangeal joints
flexion/extension
flexor digitorum superficialis acts on what bones of the hand
metacarpophalangeal joints
proximal interphalangeal joints of the 2-5
flexor digitorum profundus acts on what bones
distal interphalangeal joints 2-5
flexor pollicis longus acts on what bones
distal and proximal phalangeal bones of the thumb
ulnar nerve innervates
flexor carpi ulnaris
1/2 flexor digitorum profundus
hypothenar muscles and all other intrinsic hand muscles except thenar and 1st 2 lumbrical muscles
ulnar nerve is responsible for the cutaneous innervation of
1/3 medial hand
symptoms of ulnar nerve injury
tardy ulnar palsy - parasthesia of ring and little finger
loss of fine motor control
paralysis of fingers - claw hand
median nerve innervates
all flexor compartments except;
flexor carpi ulnaris
1/2 flexor digitorum profundus
median nerve proper of median nerve innervates
1st 2 lumbrical muscles
3 muscles of thenar eminance
symptoms of median nerve injury
carpal tunnel syndrome
parasthesia and pain - thumb, middle and index finger
symptoms of radial nerve injury in relation to hand
wrist drop in extensor
loss of sensation in dorsal of thumb and lateral hand
radial nerve is responsible for the sensory innervation of
dorsal surface of arm and hands
causes of radial nerve injury
fracture in shaft of humerus
nerve compression
