Kinesiology Chapter 12
There is approximately ___ degree of ulnar deviation
35
Carpal bones consist of two rows of ___ bones each
4
From the neutral position (extension) there is approximately _____ degrees hyperextension (wrist joint)
70
In wrist (joint) flexion/plamer flexion there is approximately ____ degrees of flexion from the neutral position (extension)
90
flexion
Dorsal radiocarpal ligament becomes taunt in wrist ______
extension
Palmar radoiocarpal ligament becomes taut in wrist____ limiting wrist extension
vertical
Wrist muscles have a _____ line of pull
ganglion cyst
benign, fluid filled cyst commonly seen as a bump on the dorsum of the wrist
The radiocarapal joint is a ___ condyloid joint
biaxial
colles fracture
break in distal radius; common in elderly; falling on outstretched hand
At the radoiocarpal joint it allows flexion/extension, radial and ulnar deviation; the combination of movements is called ? (no rotation at the wrist)
circumduction
Midcarpal joint
located between the two rows of carpal bones
_____ is also not considered part of the Radiocarpal joint
pisiform
The radiocarapal joint is a ____ joint
synovial
The ___ is not considered part of the Radiocarpal joint
ulna
ulnar deviation
flexor carpi ulnaris extensor carpi ulnaris
Anterior
flexor carpi ulnaris flexor carpi radialis palmaris longus
radial deviation
flexor carpi radialis extensor carpi radialis longus
Flexion
flexor carpi radialis flexor carpi ulnaris
Flexion/extension
sagittal plane around frontal axis
Extensor carpi radialis brevis
wrist extension
extensor carpi radialis longus
wrist extension and radial deviation
Extensor carpi ulnaris
wrist extension and ulnar deviation
Flexor carpi radialis
wrist flexion and radial deviation
Flexor carpi ulnaris
wrist flexion and ulnar deviation
There is approximately ____ degree of radial deviation
25
humerus
All prime movers of the wrist originate on the ____
The wrist joint is made up of two joints?
Radiocarpal joint and Midcarpal joint
muscles
The names of the _____ generally state their function
Carpometacarpal (CMC) joints
appear between the distal row of carpal bones and the proximal end of the metacarpal bones
Palmaris longus
assists in wrist flexion
wrist sprain
common when falling on out stretched hand
The wrist joint is the most ___ joints of the body
complex
Radiocarpal joint
consists of the distal end of the radius and the radioulnar disk proximally and the scaphoid, lunate and triquetrum distally.
avascular necrosis
death of bone tissue (without blood circulation)
smith's fracture
distal fragment is displaced anteriorly (reverse colles) fall on back of the hand
______ is the return to neutral position from flexion (wrist joint)
extension
Posterior
extensor carpi radialia longus extensor carpi radialis brevis extensor carpi ulnaris
extension
extensor carpi radialis longus extensor carpi radialis brevis extensor carpi ulnaris
In wrist joint the end feel for ALL motions is?
firm
Radial and ulnar deviation occur in the ____ plane and _____ axis (wrist joint)
frontal sagittal
Radial & ulnar deviation
frontal plane and sagittal axis
Midcarpal does what kind of motion?
gliding
_____ is beyond the neutral position (wrist joint)
hyperextension
greenstick fracture
incomplete fracture, usually of the radius; more common in children
In the ____ position the wrist joint is in the anatomical position
neutral
Midcarpal joint is located between the two rows of carpal bones; it is a ____ plane joints;allows gliding motions
non-axial
The wrist joint provides control and stability required to maintain the hand in a functional _____
position
Radial collateral ligament
provides lateral support;reinforces joint capsule
Ulnar collateral ligament
provides medial support;reinforces joint capsule
The radiocarapal joint allows flexion/extension and ?
radial and ulnar deviation
Palmar aponeurosis
relatively thick, triangular fascia located specifically in the palm of the hand; covers the tendons of the extrinsic muscles and provides some protection to the structures in the palm
Carpal bones - Proximal row (starting with the thumb)
scaphoid, lunate, triquetrum, pisiform
scaphoid fracture
sometimes associated with damage to the blood vessel that supplies this bone and can lead to avascular necrosis (death of bone tissue)
Palmar radiocarpal ligament
thick rough ligament that becomes taut in extension limiting wrist extension
pronation/supination
transverse plane around vertical axis
Carpal bones - Distal row
trapezium, trapezoid, capitate and hamate