Articular cartilage is the smooth cartilage that covers the bone in the knee and other joints.
Articular cartilage has limited ability to heal itself, and many who have such damage can go on to suffer chronic pain and swelling. Eventually, it could lead to advanced degenerative arthritis. I think he played through considerable pain. We knew he was showing a lot of heart, but we didn't realize the degree. By doing so, he became the first true freshman offensive lineman to start an opening game for UT since Bill Mayo played guard in 1981.