Final answer:
In MMT, if AROM is limited, you should check PROM next to determine the cause of the limitation.
Step-by-step explanation:
In MMT, limited AROM (active range of motion) may indicate a problem or restriction in the movement of a joint. To determine the cause of the limited AROM, you should next check PROM (passive range of motion). PROM is the movement of a joint performed by an external force, such as a therapist or the force of gravity. By comparing AROM and PROM, you can identify whether the limitation is due to muscle weakness, joint stiffness, or another underlying issue.