Elbow + Forearm Flashcards
what is the elbow significance?
allows hand to move away + twd body
intermediate joint of upper limb
helps bring food to mouth
what can you palpate on the elbow?
epicondyle
olecranon
radial head
what type of joint is the elbow?
hinge
1 degree of freedom
flexion + extension
what are the elbows 2 articulations?
humeral ulnar
proximal radial ulnar
what is the elbows axis of rotation?
through center of trochlea + capitulum
what is the “carrying angle” for men + women?
men 5 degrees
women 10-15 degrees
what is a dysfx of the carrying angle?
prominence of elbow or elbow fractures causing decreased carrying angle
limits flexion + extension
what are the ulnar collateral ligaments?
parts: anterior, posterior, oblique
provides protection against lateral stress tp elbow
medial
what are elbow radial collateral ligaments?
lateral stabilizer
what occurs in elbow joint movement?
convex on concave
anterior glide of ulna on humerus in flexion
posterior glide with extension
what are the 4 flexors of the elbow?
biceps
brachialis
brachioradialis
pronator teres
which muscles are stronger in the elbow?
flexors 1.5 times stronger than extensors
what is the fx of the biceps?
flexion of elbow (primary)
supinates radial ulna (strong)
what is the fx of the brachialis?
exclusive flexor of the elbow joint
what is the fx of the brachioradialis?
elbow flexor
supinator in extreme pronation
what is the fx of the triceps?
elbow extension
what is the fx of the anconeus?
elbow extension
what is the significance of the forearm?
allows food to be carried to the mouth and reach body
what type of movement do the radio-ulnar joints do?
uniaxial pronation and supination only
what is the ligament of the forearm?
interosseous membrane that binds radius and ulna together + provides stability for R/U joints
what is the fx of the supinator?
supination
what is the fx of the pronator quadratus?
principle pronater
what is the fx of the pronator teres?
pronation
flexion at elbow
