For 25 years, Dr. Berger has been quietly challenging long-held assumptions about joint replacement, and for Houstonian Caryn Honig this meant she could continue running the marathons she loves to run, thanks to Dr. Berger's revolutionary approach.

At 80-years-old, Deni Heller refused to let knee pain sideline her and a robotic partial knee replacement at Kelsey-Seybold Clinic helped her stay active.