For a distal radius fracture healing secondarily, when is controlled AROM typically initiated?

• A. 0-3 weeks
• B. 3-6 weeks
• C. 6-9 weeks
• D. 9-12 weeks

Answer: (B)

Controlled AROM is started when the fracture has progressed enough in healing to tolerate motion without risking displacement. For distal radius fractures healing by secondary healing, the initial weeks focus on protection and allowing the soft tissues and callus to form. By about the third to sixth week, radiographs often show bridging callus and increasing stability, so gentle, within-range active motion can be introduced to maintain joint mobility and prevent stiffness without compromising alignment. Beginning ROM earlier can jeopardize healing, while delaying ROM beyond this window increases the risk of stiffness and functional loss. So, the typical timing falls in the 3–6 week range.