Elbow Joint Flashcards
Where is the elbow joint capsule weakest and strongest?
Weak anteriorly and posteriorly
strengthened on the side by ligaments
What are the clinically important bursae of the elbow joint?
intratendinous olecranon bursa: sometimes present in the tendon of triceps brachii
subtendinous olecranon bursa: located between the olecranon and the triceps tendon
subcutaneous olecranon olecranon bursa: located in the subcutaneous connective tissue over the olecranon.
bicipitoradial bursa: separates the biceps tendon from the anterior part of the radial tuberosity
What are the ligaments that strengthen the elbow joint?
laterally: radial collateral ligament extends from the lateral epicondyle of the humerus and blends distally with the anular ligament of the radius
medially: ulnar collateral ligament extends from the medial epicondyle of the humerus to the coronoid process and olecranon of the ulna (It consists of three bands)
What are the three bands of the ulnar collateral ligament?
anterior cord-like band is the strongest
the posterior fan-like band is the weakest
the slender oblique band deepens the socket for the trochlea of the humerus
What supplies and innervates the elbow joint?
The elbow joint is supplied by anastomoses of arteries around the elbow joint
the elbow joint is innervated by the musculocutaneous, radial, and ulnar nerves
What type of joint is the elbow?
synovial hinge
