Home › Resources › Educational Videos › Can’t lift arms over head? It may be your neck… Can’t lift arms over head? It may be your neck… Dr. Centeno discusses a patient who’s overhead arm lift was dramatically improved in seconds. Free Regenexx® Webinar Join Chris Centeno, M.D., founder of Regenexx, to learn about how Regenexx procedures can treat your orthopedic injury. View Webinar Find a Regenexx Provider Location Search Search Regenexx is a world-wide network of specially trained physicians providing the world's most advanced, research-driven, regenerative interventional orthopedic procedures in North America, Europe, the Middle East, Asia and Australia.