The condyloid joint is the connection between which bones?

• A. Radius and carpals
• B. Radius and ulna
• C. Femur and tibia
• D. Humerus and scapula

Answer: (A)

Condyloid joints allow movement in two planes, such as bending the wrist and moving it side to side, without true rotation. The wrist joint is the radiocarpal joint, formed where the distal end of the radius meets the proximal row of carpal bones (the scaphoid and lunate). This setup provides two-direction movement, fitting the idea of a condyloid joint. The other options describe different joint types: the radius and ulna form a radioulnar joint that mainly allows rotation; the knee (femur and tibia) is mostly a hinge joint with limited rotation; the humerus and scapula form a ball-and-socket shoulder joint with a much wider range of motion. So the connection between the radius and the carpal bones is the condyloid joint.