Cartilage is a sturdy, flexible connective tissue that acts a shock absorber, especially in your joints and bones. It acts as a cushion for your joints. There are three types of cartilage in the body: hyaline, elastic, and fibrocartilage.
Hyaline cartilage is the most common type which lines your joints and caps the ends of your bones. In the joints, this tissue is often called articular cartilage. Articulate cartilage is a smooth, slippery white tissue that covers the ends of the bones where they meet in the joint. This tissue helps your knees glide past one another without friction. It’s strong enough to support the stability and shape of your joints.
Cartilage damage, which often happens due to sports injuries, trauma, or natural wear and tear, can lead to significant joint issues. In many cases, patients with joint injuries like meniscus tears can also have cartilage damage. Recovery time after an articular cartilage repair operation depends on the location and severity of the tear. Symptoms of a damaged cartilage include joint damage, swelling, stiffness, reduced range of motion, a popping sound that occurs when bending or moving the joint, and joint locking (inability to fully extend or bend the joint).
Cartilage damage affects the thin layer of articular cartilage at the ends of the bones in most cases. These injuries are sometimes referred to as chondral injury or chondral defect. Since the articular cartilage lacks a blood supply, which promotes healing, these injuries don’t heal well on their own. Cartilage repair involves orthopaedics and rehabilitation. Arthroscopic surgery is often the best treatment option. Other common procedures for cartilage restoration include: microfracture, drilling, abrasion arthroplasty, Matrix-induced autologous chondrocyte implantation (MACI), Osteochondral autograft transplantation, and Osteochondral allograft transplantation.
Microfracture is a technique that involves creating tiny fractures in the underlying bone to encourage the growth of new cartilage. Drilling is similar to microfracture, but it involves drilling deeper holes in the bone to promote cartilage formation. In abrasion arthroplasty, the damaged cartilage is removed, and new tissue is stimulated to grow in its place. Matrix-induced autologous chondrocyte implantation (MACI) is a procedure that involves harvesting healthy cartilage cells, culturing them in a lab, and implanting them back into the damaged area. Your doctor will discuss the options with you to determine the best kind of procedure for you.