chapter 12 wrist
radial collateral ligament
attaches radial styloid process and to the scaphoid and trapezium bones.
radiocarpal joint type
condyloid
palmar aponeurosis
covers tendons of the extrinsic muscles and provides some protection to the palm structures
posterior muscles of the wrist
extensor carpi radialis longus and brevis, extensor carpi ulnaris
motions available at the radoiocarpal joint
flexion extension RD, UD
anterior muscles of the wrist
flexor carpi ulnaris, flexor carpi radialis, palmares longus
hook of hamate is what
forward projection of the anterior surface of the hamate to provide attachment for the transverse carpal ligmanet
mid carpal joint type
irregular, nonaxial
common extensor tendon
lateral epicondyle is origin. single tendon gives rise to many prime movers for extension
what is a common origin for the wrist extensors
lateral epicondyle of the humerus
where does the extensor carpi radialis longus attach
lateral supracondylar ridge
articular disc of the wrist
located on the distal end of the ulna and articulates with the triquetrium and lunate bones. shock absorber
what is a common origin for the wrist flexors
medial epicondyle of the humerus
starting at the radius and going medallion the first row and second row. name the carpal bones
scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate
the collateral ligaments of the wrist attach to which landmarks of the ulna and the radius
styloid process of each bone
ulnar collateral ligament
styloid process of ulna to the pisiform and triquetrum
what is the mid carpal joint
the line between the 2 rows of carpal bones
what does the ulnar collateral ligament prevent
to much RD. attaches to the articular disc TFCC
what does the radial collateral ligament prevent
too much UD
extensor retiniculum
where all of the wrist hand and thumb tendons are contained here
what does the palmar radiocarpal ligament prevent
wrist extension
what does the dorsal radiocarpal ligament prevent
wrist flexion
common flexor tendon
a single tendon that originates on the medial epicondyle of the humerus. gives rise to many muscles that are flexion prime movers