How often should range of motion be evaluated in children with Duchenne muscular dystrophy?

• A. Every 2 months
• B. Annually
• C. Every 4 months
• D. Every 6 months

Answer: (C)

Regular assessment of joint range of motion in Duchenne muscular dystrophy is important because contractures can develop as the muscles weaken, progressively limiting function. Because the disease changes can occur relatively quickly, checking ROM about every four months provides timely information to guide therapy—such as stretching programs, night splints, casting, and orthoses—and to adjust activities or seating as needed. A shorter interval like every two months can be burdensome without adding much benefit, while longer intervals like annually or every six months may miss early contracture development and delay intervention. This four-month cadence helps catch meaningful declines in ROM early so you can intervene before fixed contractures or functional loss become apparent.