Which of the following describes the movement of a joint where one surface glides over another?

The movement of a joint where one surface glides over another is best described as "Glide/Slide." This motion occurs when one articular surface moves parallel to another, allowing for smooth and incremental movement between the two surfaces. It is a fundamental aspect of joint mechanics and is especially important in joints that require a lot of stability while still allowing for a degree of movement, such as the joints in the wrist or the patellofemoral joint in the knee.

In contrast, the terms "Roll," "Spin," and "Flexion" refer to different types of joint movements. Rolling involves one surface rolling over another, akin to a tire rolling down a hill, which creates a different type of contact and motion. Spinning refers to a rotation around a single axis, which is typical in joints such as the shoulder when it rotates. Flexion denotes a decrease in the angle between two body parts, such as bending the elbow or knee. Each of these movements has distinct characteristics and biomechanical implications that contrast with the sliding nature of a glide.