What defines active range of motion (ROM)?

Active range of motion (ROM) refers to the ability of an individual to move a joint using their own muscle strength without any external assistance. When assessing active ROM, the focus is on how well a person can use their muscles to achieve movement within a normal range. This is important in clinical settings as it helps determine the functional status and strength of the musculature surrounding the joint.

This definition highlights the difference between active and passive Range of Motion, where passive ROM involves movement facilitated by another person or device. Understanding active ROM is crucial in rehabilitation and physical therapy, as it provides insight into the patient's capabilities and guides treatment planning.