The benefits of focal resurfacing implants over articular cartilage grafting in the knee

The surgical treatment of chondral and osteochondral defects within the knee is becoming increasingly more complex and challenging, with an ever-increasing selection of options available to the orthopaedic surgeon. Technological and innovative advancements often move at a greater pace than the associated clinical outcomes and research-based evidence. The treatment for these conditions is continually evolving and developing before it is possible to critically appraise the data on their success. These surgical treatments are either biological, where an attempt is made to regenerate the lost tissue, or non-biological, such as focal resurfacing, partial or total arthroplasty. Each of these treatment modalities has their own merits and drawbacks. Focal resurfacings have been around for a few decades, and their aim is to be the best of both options. While still not part of mainstream practice within the UK, their evidence base is growing, and the National Institute for Health and Care Excellence has issued a review on their use. This review aims to assess the options available for treating cartilage defects in the knee, with a focus on these novel focal resurfacing implants.