Applied kinesiology quiz 3

wrist and hand joints

proximally

distally

ulna is much larger ___ than radius and the radius is much larger ___ than the ulna

flex/entend

scapula and humerus serve as proximal attachments for muscles that ___ the elbow

pronate/supinate

scapula humerus and ulna serve as proximal attachments for muscle that ___ the radioulnar joint

humero ulnar joint

true elbow joint

hinge joint

1st degree of freedom- flexion/extension

the elbow is considered what type of joint and what is the degree of freedom

145

what is the active range of motion

160

what is the passive range of motion

UCL (elbow joint stability)

what elbow joint is critical in providing medial support to prevent elbow from abducting when stressed in physical activity

radial collateral ligament

provides lateral stability and is rarely injured

annular ligament

provides a sling effect around radial head for stability

interosseous membrane

joint between shafts of radius and ulna held tightly together between proximal and distal articulations by an ___

near elbow

articulation of radial head and radial notch (ulna)

place where all radioulnar joint movement occurs

proximal articulation of the radioulnar joint

near wrist

place where no initiation of radioulnar joint movement occurs

distal articulation of the radioulnar joint

annular ligament

provides a sling effect around radial head for stability

cubitus varus

distal segment adducted

cubitus valgus

distal segment abducted

pronation

palm facing down

supination

palm facing upward

assistive supinators

radial wrist extensors

extensor pollicis longus

extensor indicis

assistive pronators

flexor carpi radialis

palmaris longus

pronator

supinator

brachioradialis works both as a ___ to neutral radioulnar position and a ___ to neutral radioulnar position 

stronger

supinators ___ than pronators

29 bones

how many bones are in the wrist and hands

more than 25

how many joints are in the wrist and hands

more than 30

18 of which are intrinsic

how many muscles are in the wrist and hands

radius

ulna

8 carpal bones (in 2 rows of 4 bones which form wrist)

5 metacarpal bones (numbered 1 to 5 from thumb to pinky)

14 phalanges (digits) (3 for each phalange except the thumb which has 2) (proximal, middle, distal)

thumb has seasomoid bones

other sesamoid bones in joints and fingers

what are the 29 bones of the wrist and hand

radiocarpal joint

wrist joint also called 

scaphoid

the ___ supports most of the forces from radius to hand

most often the carpal broken with a broken wrist due to falling on outstretched hand

lunate

the ___ supports the rest of the forces from radius to hand

most often the carpal broken with a dislocated wrist due to falling on outstretched hand

three sided arch

carpal tunnel

carpal bones form a ___ creating the ___

retinaculum

a thick band of fibrous tissue running transversely across the wrist

extensor retinaculum

flexor retinanculum

dorsal tendons are held in place by the ___ and palmar tendons are held in place by the ___

radial deviation

movement of thumb side of hand towards lateral aspect or radial side forearm

ulnar deviation

movement of little finger side of hand toward medial aspect or ulnar side of forearm

thumb opposition

movement of thumb across palmar aspect to oppose any or all of the phalanges

thumb reposition

movement of thumb as it returns to anatomical position from opposition with hand and/or fingers

radial deviation movements

flexion

extension

abduction

ulnar deviation movement

adduction

radial/ulnar deviation

occurs between the proximal and distal carpals

action of the carpals sliding over each other creates the movement

a form of gliding joint

70-90 degrees

flexion degree of the wrist

65-85 degrees

extension degree of the wrist 

15-25 degrees

radial deviations degree of the wrist 

metacarpophalangeal joints (MCP)- condyloid joint

proximal interphalangeal joints (PIP)- hinge joint

distal interphalangeal joints (DIP)- hinge joint

what joints do each finger have

carpometacarpal joint (CMC)- saddle joint

metacarpophalangeal joint (MCP)- hinge joint

interphalangeal joint (IP)- hinge joint

thumb joints