Joints of Upper Limb 9 Flashcards
What type of synovial joint is the glenohumeral? What forms the socket of the glenohumeral?
Ball and socket (glenoid cavity)
What structure serves to deepen the socket? What is it composed of?
The glenoid labrum: fibrocartilage
What 3 thickenings of the fibrous capsule (ligaments) strengthen the glenohumeral joint anteriorly?
Superior, middle and inferior glenohumeral ligaments
The fibrous capsule of the shoulder joint is strengthened superiorly by the ________ tendon.
long head of biceps brachii
Which bursaes are associated with the glenohumeral joint? What is its function?
subscapular bursae and subacromial bursae: permits free movement
The _______ tendon arises from the supraglenoid tubercle within the joint capsule.
long head of biceps brachii
What type of synovial joint is the elbow?
hinge joint
Name the collateral ligaments that strengthen the elbow joint.
Ulnar and radial collateral ligaments
The head of the radius is held within the radial notch of the ulna by the _______.
annular ligament
The head of the radius articulates with the ________.
capitulum of the humerus (superiorly)
radial notch of the ulna (laterally)
The actions of supination and pronation occur primarily at which specific joint?
The proximal radioulnar joint
Which muscles supinate? pronate?
Supinate: The biceps brachii and supinator mm
Pronate: The pronator teres and pronator quadratus mm
Which of the 2 bones of the forearm is not involved in the articulation of the radiocarpal joint?
ulna
The distal articular surface of the radiocarpal joint is formed by which bones of the hand?
The scaphoid, lunate and triquetral bones
What happens when you have bursitis of the subacromial bursae?
Pain that limits abduction of the upper limb
