As an expert in the field of orthopedics, I can tell you that the body has a limited ability to repair cartilage. Unlike many tissues, cartilage does not have a blood supply, which means it doesn't heal as easily. However, there are medical procedures and treatments that can help stimulate the growth of new cartilage or provide relief from the symptoms of cartilage damage.

One such procedure is called **autologous chondrocyte implantation (ACI)**. This involves taking a small sample of the patient's healthy cartilage, culturing the cartilage cells (chondrocytes) in a lab, and then injecting these cells back into the area of damaged cartilage. Over time, these cells can grow and form new cartilage.

Another option is **osteochondral autograft transplantation (OAT)** or allograft transplantation, where healthy cartilage is transplanted from one part of the body to the damaged area.

Additionally, there are non-surgical treatments such as viscosupplementation, which involves injecting a gel-like substance into the knee to lubricate the joint and protect the cartilage, and arthroscopic debridement, a minimally invasive procedure to clean and smooth the joint.

It's important to note that while these treatments can help with the symptoms and potentially improve the quality of cartilage, they may not fully restore the damaged cartilage to its original state.

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In these two studies cited above, MRI exams captured images of knee cartilage growing thicker. So apparently it can heal, and the worst locations (worn to the bone) often regrow new tissue. ... All had previously undergone knee surgery. Many complained of pain and stiffness in their joints.read more >>