During ROM measurement for a Colles' fracture, how should the patient be positioned?

• A. Sitting with the involved extremity supported on a treatment plinth
• B. Standing with the knee extended
• C. Lying prone with the forearm on a table
• D. Sitting with the elbow flexed and palm down

Answer: (A)

Stabilizing and supporting the entire upper limb is essential to get an accurate wrist ROM after a Colles fracture. Having the patient sit with the involved extremity resting on a firm surface (a treatment plinth) provides a stable base for the forearm and hand, allows the wrist to move freely without trunk or shoulder compensations, and reduces pain from unsupported weight. This setup keeps the alignment consistent and makes the measurements of wrist flexion–extension and radial/ulnar deviation more reliable. Positions that don’t offer solid arm support or that place the limb in awkward or compensatory postures can introduce movement from the shoulder or trunk and skew the ROM results.