The Egen classification scale is used to describe functional abilities of patients with Duchenne muscular dystrophy and identifies which stages?

• A. Duchenne Muscular Dystrophy
• B. Functional Abilities of Patients with Duchenne Muscular Dystrophy and Identifies Presymptomatic, Early Ambulatory, Late Ambulatory, Early Non-Ambulatory, or Late Non-Ambulatory
• C. Cerebral Palsy
• D. Spinal Muscular Atrophy

Answer: (B)

In Duchenne muscular dystrophy, the Egen classification tracks functional ability as the disease progresses, moving through stages that reflect walking capability and independence: presymptomatic, early ambulatory, late ambulatory, early non-ambulatory, and late non-ambulatory. This sequence captures the typical shift from no symptoms to walking, then to reduced mobility and eventually wheelchair dependence, guiding rehab goals, assistive device planning, and prognosis. It’s specific to Duchenne and isn’t used for cerebral palsy or spinal muscular atrophy, which have their own classification systems.