3B.3 ELBOW

Question 1

Joints of the elbow

Answer 1

-Humeroradial
-Humeroulnar
-Cubital (flexion)
-Proximal Radioulnar (supination)

Question 2

ligaments of the elbow

Answer 2

• hinge joint
• annular lig. of radius
• radial collateral lig.
  -ulnar collateral lig.

Question 3

injuries of the elbow

Answer 3

elbow dislocation

radial head subluxation
- arm is jerked upwards with forearm pronated
- annular ligament can tear loose from attachment on radial neck, radius dislocates
- annular ligament can become entrapped between radius + humerus
- supination + elbow flexion returns radius to normal position

Question 4

cubital fossa

Answer 4

• triangular-shaped region
• bounded by epicondyles of humerus, brachioradialis, and pronator teres
• consist of radial nerve, median nerve, bicipital tendon, brachial artery, and is covered by bicipital aponeurosis