What is the accepted protocol for assessing range of motion (ROM)?

Using a goniometer to measure joint angles is the accepted protocol for assessing range of motion (ROM) because it provides a standardized and objective means of quantifying the angle at which a joint can move. This method allows for precise measurements, which are essential for tracking changes over time, setting rehabilitation goals, and evaluating the effectiveness of treatment plans.

Goniometers give clinicians the ability to document ROM in degrees, which is critical for comparing results to normative data and for communicating findings with other healthcare professionals. The objective nature of this tool helps minimize variability that can occur with subjective assessments.

In contrast, visual inspection of movements provides only a qualitative assessment and lacks the precision needed for clinical decision-making. Self-reporting can introduce bias, as patients may not accurately communicate their limitations due to pain or functional ability. Finally, performing resistance tests on muscles primarily assesses strength rather than the joint's available range of motion and thus does not focus on the specific ROM assessment necessary for a comprehensive evaluation of joint function.