Joints of Upper Limb Flashcards
What forms the socket of the glenohumeral joint? What structure serves to deepen the pocket (what material?) ?
Glenoid fossa
The Glenoid Labrum– made of fibrocartilage
What type of synovial joint is the glenohumeral?
Ball & Socket
What 3 thickenings of the fibrous capsule strengthen the glenohumeral joint anteriorly?
Superior, Middle, and Inferior glenohumeral ligaments
The fibrous capsule of the shoulder joint is strengthened superiorly by the tendon of which muscle?
Tendon of the long head of biceps brachii
Which bursae are associated with the glenohumeral joint? What is the function?
Subscapular bursa communicates with the synovial cavity, it permits free movement of overlying structures
The tendon of which muscle arises from the supraglenoid tubercle within the capsule?
The tendon of the long head of the biceps brachii
What type of synovial joint is the elbow joint?
Hinge
Name the collateral ligaments that strengthen the elbow joint
1) Ulnar collateral ligament
2) Radial collateral ligament
The head of the radius is held within the radial notch of the ulna by what structure?
Annular ligament
The head of the radius articulates with what?
Superiorly: capitulum of humerus
Laterally: radial notch of ulna
The actions of supination and pronation occur primarily at which specific joint? Which muscles do each?
Proximal radioulnar joint
Supinate- biceps brachii and supinator mm.
Pronate- pronator teres and pronator quadratus mm
Which bone of the forearm is not involved in the articulation of the radiocarpal joint?
The ulna
The distal articular surface of the radiocarpal joint is formed by which bones of the hand?
Scaphoid, lunate, triquetral
