The proximal radioulnar joint is described as the joint between which bones near the elbow?

• A. Proximal radioulnar joint
• B. Distal radioulnar joint
• C. Radiocarpal joint
• D. Humeroradial joint

Answer: (A)

This question tests your understanding of which bones form the joint near the elbow called the proximal radioulnar joint. It is the articulation between the radius and the ulna at the proximal forearm: the head of the radius fits into the radial notch of the ulna, with the annular ligament holding it in place. This arrangement lets the radius rotate around the ulna, allowing forearm pronation and supination. The other options describe different joints: the distal radioulnar joint is at the wrist, the radiocarpal joint is between the radius and the carpal bones, and the humeroradial joint is between the humerus and radius at the elbow but is not the proximal radioulnar joint. So the joint between the radius and ulna near the elbow is the proximal radioulnar joint.