MSK Session 5- Elbow And Joints Of The Forearm Flashcards
Define subluxation
Partial dislocation of a joint so that the bone ends are misaligned, but still in contact.
Define dislocation
Complete loss of contact of the joint surfaces.
Which muscles allow pronation of the forearm?
- pronator teres
- pronator quadratus
What muscles allow supination of the forearm?
- biceps brachii
- supinator
What features allow pronation/supination?
- head of the radius and capitulum articulation
- annular ligament
- sacciform recess
What separates the distal radio-ulnar joint cavity from the wrist cavity?
The articular disc
Which ligament ensures the hand follows the radius in supination?
Palmar radio-carpal
What ligament ensures the hand follows the radius in pronation?
Dorsal radio-carpal
What is abduction at the wrist limited by?
Radial styloid process
What is abduction of the hand AKA?
Radial deviation
What is adduction of the wrist AKA?
Ulnar deviation.
What type of joint is the elbow joint?
A hinge synovial joint
What type of joint is the wrist/ radio-carpal joint?
A condyloid synovial joint
What are the three articulations of the elbow joint?
- humero-ulnar joint- between the trochlea of the humerus and the trochlea notch of the ulna.
- Humero-radial joint- between the capitulum of the humerus and radial head.
- Proximal radio-ulnar joint- between the medial edge of the radial head and the radial notch of the ulna.
What are the three elbow ligaments that strengthen the joint capsule? Where are they found?
- radial collateral - between lateral epicondyle and annular ligament of radius.
- ulnar collateral - between the medial epicondyle, ole random and coronoid process.
- annular ligament - collar surrounding the radial head that ensures it remains within the radial notch on ulna.
