What term describes the ability of a joint to move through a given range of motion under neurological control during active ROM?

• A. Mobility
• B. Flexibility
• C. Range of motion
• D. Joint laxity

Answer: (A)

Mobility is about a joint moving through a specified range with voluntary, neuromuscular control. It captures the ability to actively produce and regulate the motion, not just how far the joint could go. Flexibility focuses on how well soft tissues lengthen to allow movement, which affects end-range reach but doesn’t address active control. Range of motion describes how far a joint can move, but without specifying whether the movement is active or passive. Joint laxity refers to looseness of the joint structures and doesn’t inherently involve controlled active motion. So the term that best fits “ability to move through a given range of motion under neurological control during active ROM” is mobility.