Elbow - Joints & Ligaments Flashcards
The radial head is held in place by what ligament?
Annular ligament
The HUJ is what type of joint?
Hinge
What acts as a butress to lateral compression?
capitulum
What joint receives the bulk of lateral compression and rotational forces with rapid forearm movements (throwing)?
HRJ
What articulates at the PRUJ?
Radial head of radius and radial notch of ulna
What articulates at the DRUJ?
Ulnar head of ulna and ulnar notch of radius
The PRUJ is what type of joint?
Pivot
The PRUJ allows for what movement?
Pronation and supination of forearm
Function of interosseous membrane? (3)
increase surface area for muscle attachment
transmits forces from distal to proximal
guides movement of radius in pronation/supination
Primary, secondary allows tertiary stability of elbow joint?
Primary - structural integrity (humeroulnar joint)
Secondary - ligamentous support
Tertiary - muscular support
The elbow joint capsule is thicker _____ than ______
Thicker anteriorly than posteriorly
What are the 3 components of the ulnar (medial) collateral ligament?
Anterior band
Posterior band
Transverse (oblique) band
The anterior band of the UCL goes from…
Medial epicondyle to coronoid process
The posterior band of the UCL goes from…
medial epicondyle to medial aspect of olecranon process
The transverse band of the UCL goes from…
***ULNA TO ULNA
Medial coronoid process to medial olecranon process