Dr Jack Bert is a board certified orthopedic surgeon with a subspecialty interest in knee injuries and arthritis of the knee. I am past president of the Arthroscopy Association of North America and have lectured nationally and internationally for over 20 years on knee conditions. I teach orthopedic surgery to other orthopedic surgeons over 20 times per year and have published over 72 articles and 18 book chapters on orthopedic pathology. My subspecialty interest is on the treatment of cartilage pathology of the knee including injectable treatments such as stem cell, PRP, and viscosupplements prior to considering surgical intervention. I teach cartilage restoration courses a minimum of twice/year for the American Academy of Orthopedic Surgeons and the Arthroscopy Association of North America.