Heidi Jannenga was a rising collegiate basketball star at UC Davis, coming off the highest-scoring game of her career, when a bad landing on a routine layup blew out her knee. Intensive rehab got her back on the court in time for the playoffs and inspired her to pursue a career in the field–first as a sports therapist, then as a director of three physical therapy clinics. Then she founded Phoenix, Arizona-based WebPT –a software company that