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Multiple Choice

What is a diarthrosis joint?

Freely movable joints are diarthroses, featuring a synovial cavity with synovial fluid, articular cartilage, a capsule, and ligaments that together allow a wide range of motion while providing stability. This design makes them the most common type of joint in the body, seen in knees, shoulders, elbows, and hips. The key idea is that diarthroses are defined by their freedom of movement, not by a single limited motion. Slightly moveable joints describe amphiarthroses, and immovable joints describe synarthroses, so those terms refer to less movement than a diarthrosis. A pivoting joint with rotation only is too restrictive a description for diarthroses, since many diarthrotic joints allow multiple types of movement beyond just rotation.

Freely movable joints are diarthroses, featuring a synovial cavity with synovial fluid, articular cartilage, a capsule, and ligaments that together allow a wide range of motion while providing stability. This design makes them the most common type of joint in the body, seen in knees, shoulders, elbows, and hips. The key idea is that diarthroses are defined by their freedom of movement, not by a single limited motion.

Slightly moveable joints describe amphiarthroses, and immovable joints describe synarthroses, so those terms refer to less movement than a diarthrosis. A pivoting joint with rotation only is too restrictive a description for diarthroses, since many diarthrotic joints allow multiple types of movement beyond just rotation.