Eighteen boys with Duchenne muscular dystrophy (DMD) were assessed for their 
ability to perform tasks involving wrist and hand function. Each subject was 
assessed using the Jebsen Test of Hand Function, range of motion measurements, 
and muscle strength tests. Writing and simulated page turning were performed 
successfully by boys in all age groups. Boys over age 15 had difficulty 
completing simulated feeding and picking up large and small objects. The muscle 
strength of the wrist extensors and the radial deviation range of motion at the 
wrist were found to be strongly correlated with six of the seven tasks assessed. 
These two clinical assessments appear to be good indicators of overall wrist and 
hand function. Life expectancy with DMD is increasing with advances in 
respiratory care making preservation of wrist and hand function, the major 
activity remaining with advanced disease, increasingly important.