Which step involves repeating the PROM to end range and aligning the goniometer?

• A. Return extremity to resting position
• B. Repeat PROM to end range, position goniometer using correct alignment
• C. Establish a zero-degree starting point
• D. Document ROM

Answer: (B)

The step being tested is about ensuring accurate ROM measurement with a goniometer by confirming end range and aligning the instrument correctly. After moving the limb passively to the end of range, repeating PROM to that end range and positioning the goniometer so the fulcrum sits over the joint axis and the arms align with the proximal and distal segments lock in the true final angle. This re-check helps ensure the reading reflects the actual end range and isn’t distorted by initial misalignment or a partial stretch. The other actions—returning to a resting position, establishing a zero starting point at the start, and documenting the ROM afterward—are part of the overall procedure, but they don’t capture the specific step of rechecking end range with proper alignment.