Like many middle-school kids, 11-year-old Callen, of Emmaus, Pennsylvania, has turned his mom, Jamie Moulthrop, into a chauffeur, she jokes. He participates in karate, baseball, hockey, and surfing, and he meets up often with friends at the pool and splashes around for hours. Unlike the other kids around him, though, Callen has Charcot-Marie-Tooth disease (CMT), a . . .
When Kristine Welker’s son was young, he wanted to be as involved in sports as everyone else in the family — and that meant a high level of activity, from biking and boating to organized sports and running. “Our son is our third child and by the time he came along, we figured he’d follow . . .