Elbow & Radioulnar Flashcards
What does the annular ligament do?
It maintains the radial head
What holds together the shaft of the radius and ulna?
Interosseus membrane
Elbow movements?
Flextion and Extension
Radioulnar movements?
Pronation and Supination
What is the definition of pronation?
When the radius and ulna cross aka palm up
What is the definition of supination?
When the radius and und parallel aka palm down
Elbow flexors
Bicep brachii, brachialis, and brachioradialis
Elbow extensors
Tripe brachii and Aconeus
Radioulnar pronators
Pronator teres and pronator quadratus
Radioulnar supinators
Supinator and Bicep brachii
What is the insertion of the bicep brachii long head?
The superglenoid tubercle
What is the insertion of the bicep brachii short head?
The coracoid process
What is the origin of the bicep brachii?
The radial tuberosity of the radius
What is the insertion of the brachialis?
The coranoid process of the ulna
Where does the brachialis originate?
The distal half of anterior portion of the humerus
Where does the brachioradialis originate?
Distal two thirds of the lateral epicondyle
Where does the brachioradialis insert
The radial styloid process
Where does the long head of the tricep brachii originate?
The infraglenoid tubercle of the scapula
Where does the short head of the triceps brachii originate?
Upper half of posterior surface of the humerus
Where does the triceps brachii insert?
0lecrannon process of the ulna
Where does the aconeus originate?
Posterior surface of lateral condyle
Where does the aconeus insert?
Olecrannon process
Where is the first origin of the supinator?
Lateral epicondyle of humerus
Where is the second origin of the supinator?
Posterior part of the ulna
Where does the supinator insert?
Lateral surface of proximal radius (just below the head)
Where does the pronator teres originate?
Distal part of the medial condyloid ridge of humerus
Medial side of proximal ulna
Where does the pronator teres insert?
Middle third of lateral surface of radius
Where does the pronator quadratus originate?
distal fourth of anterior side of ulna
Where does the pronator quadratus insert?
Distal fourth of anterior radius
Actions of the bicep brachii?
Flextion & supination
Primary actions of the brachioradialis & brachialis?
Elbow flextion
Which bone & landmark articulate with the trochlea?
Bone - ulna
Landmark - trochlear notch
Which bone and landmark articulate with the capitate?
Bone - radius
Landmark - radial head
What ligament crosses over the ulna to medial epicondyle?
Ulnar collateral ligament
What ligament goes from the trochlea notch over the radial head to the lateral epicondyle?
Annular ligament
What are the shoulder joint muscles?
biceps triceps Lattimus dorsi pec major Terrace major Terrace minor subscapularis infraspinatus supraspinatus coracobrachialis deltoid
what are the shoulder girdle muscles?
 rhomboids, trapezius, serratus anterior, subclavius, Levator scalpulae, pec minor 
shoulder girdle rules
- originate on the axle skeleton
- do not attach on the humerus
- insert on scapula and clavicle
shoulder joint rules?
- originate on the clavicle and scapula
- insert on humerus
- move the humerus
