When your knee hurts or aches for an extended amount of time, it’s easy to point the finger at osteoarthritis, a common cause of joint pain. But bone marrow lesions, or flaws in the bone near the joint, are an important underlying cause of joint pain. A new procedure offered by Dr. Nicola, called Subchondroplasty, treats bone marrow lesions, thus decreasing pain levels and delaying or preventing the need for knee replacement surgery.