Upper Limb 2 Station 5 - Elbow Joint and Radio-Ulnar Joint Flashcards
What type of joint is this?
Synovial hinge
Capitulum articules with the…
Head of radius
Trochlae articulates with the…
Head of trochlea on ulnar bone
What movements occur at elbow joint?
Flexion and Extension
Ligaments of elbow joint - the fibrous layers of the joint capsule of the elbow joint is thickened where? Why?
On the medial and lateral aspects of the joint
This forms the strong bands of the medial/ulnar AND lateral/raidal collateral ligaments
The fibrous layers of the joint capsule are loose on what sides and why?
Ant. and posterior sides to allow movement
Which ligament holds the head of the radius
Annular ligament
What are the 3 flexors of the elbow joint?
Biceps
Brachialis
Brachioradialis
Reminder - what does the coracobrachiialis do?
Flexes and adducts the glenohumeral joint - not the elbow
Extensors of the elbow joint?
Triceps
Anconeus
What type of joint is the radio-ulnar joint (both distal and proximal) ?
Pivot type synoivial joints
What main 2 muscles supinate the arm at the r/u joint?
Supinator
Biceps
What main 2 muscles pronate the arm at the r/u joint?
Pronator teres
Pronator quadratus
