Painful knees are a common problem.  And the most common cause of knee pain is arthritis.  So common in fact, that the National Institute of Arthritis and Musculoskeletal and Skin Diseases estimates that more than 70 million Americans suffer from some form of this degenerative disease.

And while there are a number of non-surgical treatments that can help alleviate knee pain, at some point, the arthritis in the knee begins to interfere with the quality of life, and the only option left is total knee replacement surgery. But what exactly is knee replacement surgery??

In this LifePOD, Ronald Delanios, M.D., an orthopedic surgeon at the world-renowned Rubin Institute for Advanced Orthopedics at Sinai Hospital in Baltimore, Maryland, explains knee replacement surgery.  He also talks about how long a knee replacement can last, and some of the new, cutting edge technologies, such as Computer Assisted Surgery and other procedures being used at the Center for Joint Preservation and Replacement at Sinai Hospital of Baltimore.