Cartilage transplant: What are the risks of the novel procedure? 'There may be a long wait for a donor, as the donor cartilage must exactly match the patient knee.' He explained that he would use a piece of cartilage from a donor, exactly the same size as my meniscus, and implant it into my knee. In terms of donor cartilage, you need to find an exact match in size and shape — cutting a piece down to size can damage it. The transplant is complete when blood vessels start to grow into the donor meniscus — this usually takes six months.

Source: Daily Mail April 17, 2018 00:00 UTC