palm of hand Flashcards
what are the 8 carpal bones
hamate, trapezoid, trapezium ,capitate, scaphoid, pisiform, lunate, triquetrum
What lies distal to the carpals
Metacarpals
How many phalanges do we have
3 in each finger and two in thumb
What is a carpometacarpal
Joint
Between distal row of carpal bones and proximal metacarpals
Metacarpophalangeal joint
Between distal part of metacarpals and proximal phalanges
Interphalangeal joints
Between the phalanges
In what ways are the fingers able to move
Flexion
Extension
Abduction
Addiction
What movements can the thumb do
Flexion Extension Abduction Adduction Opposition
Muscled of forearm that are prime flexors of the wrist
Flexor carpi radialis - 2nd metacarpal
Flexor carpi ulnaris- 5th metacarpal
Palmaris longus - inserts into palmar fascia
Which anterior compartment muscles flex the digits
Flexor digitorum superficialis
Flexor digitorum profundus
Flexor pollicis longus
What does the trapezium metacarpal articulate with
The trapezius
Carpal bone
role of the flexor pollicis longus
inserts onto the distal phalanx of the thumb
flexes the IP joint of the thumb
where does the palmaris longus attach onto
into palmar fascia
role of flexor digitorum superficialis
flex the fingers
role of flexor digitorum superficialis
flex the fingers
how does the FDS split
divides into two tendons and passes around the deep tendon and attaches to the middle phalanx
what passes through the split of FDS
FDP
Flexor digitorum profundus
role of the lumbricals
passes through the lateral side of the index finger
to bend and straighten the interphalangeal joints
what does flexor pollicis longus do
inserts onto the dsital phalanx of the thumb
flexes the IP joint and is the only muscle that can do this
what are the intrinsic muscles of the hand innervated by
ulnar and medial nerves
what is the thenar eminence
fleshy part of the mass on palm of f hand at the base of the thumb
what are the three muscles that act in the thenar eminence
flexor pollicis brevis- flexes the thumb
abductor pollicis brevis- abducts the thumb
opponens pollicis - oppose the thumb
innervation of the thenar muscles
recurrent branch of median nerve
which muscle moves the thumb and its innervation
adductor pollicis
ulnar nerve
what does the 1st metacarpal articulate with
trapezium
where does fds articulate with
middle phalanx
muscles of the hypo thernar eminence are innervated by what
ulna nerve
lumbricals , palmar interosseous and dorsal innervated by
ulna nerve
what are palmar and dorsal interosseus responsible for
palmar - adduction
dorsal- abduction
importance and innervation of palmaris brevis
for grip strength
ulnar nerve
innervation of the lumbricals
lateral 2 - median nerve
medial 2 by ulnar
what type of joints are the metacarpophalangeal
condyloid joints
type of joint - interphalangeal
hinge
