which "reduces translation btwn the 2 bones" & are also held together by proximal & distal radioulnar joint
what inserts on the coronoid process?
occasionally the flexor pollicus longus
tricep tendon attaches to:
attachment of the brachialis tendon:
head of radius articulates on:
the end of the head of the radius articulates with the:
the rounded part of the head articulates c/:
ulna & partly c/ the ligaments that surround it
what attaches the distal radioulnar joint to the radius and ulnar styloid?
during movement assoc with supination & pronation of the hand, the _____________ rides around the ___________ with the _______ providing the pivot point.
distal head of the radius
head of the ulna
wrist joint is made of what 2 joints?
what are their functions?
radiocarpal joint: radial & ulnar deviation
mid carpel joint
both: flexion & extension of the wrist
what are the 8 carpel bones in order?
what are the 3 ligaments of the wrist?
radial collateral ligament
ulnar collateral ligament
which ligaments of the wrist are laterally placed?
what do they do?
radial collateral ligament
holds the radial side of the elbow together
what muscle arises from the radial collateral ligament?
radial collateral ligament attaches from the:
lateral epicondyle & "fans out" continuous c/ the anular ligament
anular ligament conforms entirely to the:
radial head so that the radius, although ALLOWED to rotate, is completely limited otherwise
the ulnar collateral ligament arises from:
the medial epicondyle "fanning out" in a triangle attaching to the ulna all along the medial side of the trochlear notch
is the joint capsule of the elbow stable or not stable?
(ligaments & bony articulation)
what joints are referred to as 1 joint (elbow joint) bc they are located in the same anatomical region & not entirely separated structurally?
Humeral ulnar joint
proximal radioulnar joint
what 2 joints are close together but are physically separated?
distal radioulnar joint
describe the appearance of the elbow joint:
relatively loose, thin, & baggy ant & post
this allows FROM
what is a difference btwn the elbow joint and the wrist joint?
elbow stability is related to osseous structures
wrist is stabilized & held together ENTIRELY by ligaments
the capsule of the wrist joint is strong & represented on the extensor aspect as the _________ & on the flexor aspect, it forms the:
Dorsal radiocarpal ligament
Palmar radiocarpal ligament
collateral ligaments hold bones together in:
radial & ulnar deviation
radiocarpal ligaments hold bones together in:
flexion & extension
3 flexor muscles of the forearm:
*note: all of these muscles funct: is flex the forearm. and a little supination
attachment of brachialis:
arising from broad area on the ant humerus & is inserted onto ulnar tuberosity
attachment of bicep brachii-
on its lateral edge, the tendon fans out medially into a thin sheet of fascia called ________ which is continuous c/ deep fascia that surrounds the forearm
long: travels thru bicipital groove to supraglenoid process
short: arises from coracoid process
they merge distally forming "2 part tendon"
inserts on radial tuberosity
attachment of the brachioradialis:
arises half way up the humerus to insert on the distal radius
the extensor of the forearm:
attachments of the 3 heads of the triceps:
long: infraglenoid tubercle
lateral: high up on the lateral side of the posterior humerus
medial: a broad area lower down & more medially
what are the forearm rotators:
the pronators & supinators
bicep brachii (as a supinator)
attachment of the pronator teres:
medial epicondyle & ulnar
inserts 1/2 way down on the lateral surface of the radius
what nerve passes thru btwn 2 heads of the pronator teres?
attachment of the pronator quadratus:
arises from anteriomedial aspect of the ulna
inserts on anterior surface of the radius
attachment of the supinator:
arises from lateral epicondyle & radiocollateral ligament, anular ligament, & supinator crest of the ulna
inserts on radius on a line just above pronator teres
what nerve runs thru the supinator muscle?
a deep branch of the radial nerve
what muscle is a direct antagonist of the supinator muscle?