Elbow Flashcards
What are the 3 joints in the articular capsule?
Humeroradial
Humeroulnar
Proximal radioulnar
Which joints are involved in flexion and extension?
Humeroradial and humeroulnar
Which bone moves in pronation?
Radius
Where does the ulna articulate with the humerus?
Trochlea and trochlea notch
Where does the radius articulate with the humerus?
Capitulum
Where is the medial epicondyl?
Medial
What is the carrying angle? Difference for women?
Angle that the forearm comes out of the elbow
2x wider in women because they have bigger hips
What is the olecranon fossa?
Where the olecranon slots into the humerus when the arm is extended
Depression in the humerus on the lateral side
Where is the olecranon?
It’s the pointy part of the ulna
What do the ulna and radius look like?
The ulna hooks around the humerus
The radius is like a flat head
What is the coronoid fossa?
Depression in the medial part of the humerus
Where the claw of the ulna slots in when the elbow is fully flexed
What 3 bones make up the arm?
Humerus
Radius
Ulna
Which ligaments help with flexion and extension? And what shape are they?
Radial collateral ligament - radial side
Ulna collateral ligament - ulna side
Triangular
Which ligament is involved in pronation and supination?
What is it’s shape?
Anular ligament
Loops around the radius
Which ligament is most likely to tear in children?
Anular ligament
Radius removed from the joint
What is incomplete dislocation called?
Subluxation
Which muscles are involved in flexion?
Biceps brachi
Brachialis
Which muscles are involved in extension?
Triceps brachi
Which muscles are involved in pronation?
Pronator teres
Pronator quadratus
What muscles are involved in supination?
Biceps brachii
Supinator
Which nerve innervates the posterior compartment of the arm?
Radial
Which nerve innervates the anterior compartment of the arm?
Musculocutaneous nerve
Which muscles are in the anterior compartment of the arm?
Shoulder and elbow flexors
BBC
Biceps Brachii
Brachialis
Coracobrachialis
Which muscles are in the posterior compartment of the arm?
Shoulder and elbow extensors
Where does the musculocutaneous nerve originate?
C5
C6
C7
Where does the bicep reflex originate?
C5 C6