elbow and forearm Flashcards
what type of joint is the elbow?
hinge
List all 3 bones in elbow and forearm
humerus, radius (thumb), ulna (pinky)
List the 4 joints in elbow and forearm
humeroulnar (hinge), humeroradial (pivot), proximal radio-ulnar, distal radio-ulnar
What are the two prominences at the distal end of the humerus?
lateral and medial epicondyle
What 2 bones are in the forearm?
radius and ulna
What are the two important landmarks of the elbow
trochlea( ulna), capitulum (radius)
What are the two fossas of the elbow
coronoid (anterior), olecranon (posterior)
What is the “true elbow” Joint
ulnohumeral (hinge) (flex and extend)
What is the role of the capsular ligament
Surrounds all three joints (ulnohumeral, radiohumeral, radioulnar). It keeps fluid in
What are the ligaments of the elbow
anterior band of capsular ligament, lateral band and is posterior
Where are the collateral ligaments located
underneath the capsule and on the side
What is the role of the collateral ligaments
provide stability from varus and valgus forces
What force is varus
inside
What force is valgus
lateral
Radial collateral ligament
lateral
Ulnar collateral ligament
medial
What is the ligament of the forearm
interosseous ligament ( runs between radius and ulna)
What is the ligament of the wrist
( distal radioulnar joint)
what does the brachialis do
helps with elbow flexion (Posterior)
what does the brachioradialis do
assists, flexor of elbow joint (posterior
What is the role of the biceps brachii
primary elbow flexor (anterior)
What is the role of the triceps brachii
main elbow extender (posterior)
what is the role of the anconeus
synergist, fully extend (posterior)
where is the pronator teres located
proximal elbow
where is the pronator quadratus located
radius and ulna (distal)
where is the supinator located
proximal elbow, ulna to radius (wrap around)
