On the day Dr. Mary Ehlenbach toured the Kidz Korner nursing home for children with complex medical needs, she encountered a little boy confined to one of two cribs in a large room. The boy appeared excited to see visitors, and when a caregiver lowered a railing to his crib, he bolted. “He made a run for it,” Ehlenbach, medical director of the Pediatric Complex Care Program at the University of Wisconsin, testified at a recent trial.