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