Active ROM (AROM): client moves themselves. It samples willingness, motor control, contractile function, joint motion and symptoms together. Passive ROM (PROM): therapist moves the relaxed region within scope and training. It reduces voluntary muscle effort and can help compare available motion/end feel. Resisted movement: client contracts against resistance, often without much joint movement, to challenge contractile tissue.
Pain with active movement alone does not prove a muscle lesion. Pain with resisted contraction may increase suspicion of contractile-tissue involvement, while painful/restricted passive motion can point toward noncontractile structures or joint-related limitation. These are reasoning clues, not stand-alone diagnoses.
Common normal end-feel categories include soft (soft-tissue approximation), firm (capsule/muscle/ligament stretch) and hard (bone-to-bone). Pain, guarding or an unexpected stop can create an abnormal-feeling endpoint. Do not force through it.
Choose a measure tied to the client's goal. Example: comfortable cervical rotation before treatment, then repeat the same movement afterward. Reassessment asks whether the intervention changed function/symptoms, not whether the therapist's preferred theory was “correct.”
Stop testing for sharp/electrical/radiating symptoms, marked guarding, instability, severe pain, acute trauma concerns or other red flags. Testing should not become a contest to find the maximum tolerable range.