Bone Meniscus Bone Title of the Invention: Composite Bone Implants Abstract Title: A decelluralised implant material

A product for use as an implant includes a decellularised natural multi-composite bone transplant material 5. It is decellularised by 90-100% of the cells. The product may be derived from allogeneic or xenogeneic tissue, specifically porcine tissue and may be a ligament, meniscus or enthesis. A method of forming the product is also described and involves freezing and thawing; the use of a fluid jet; incubating in a hypotonic solution with an anionic detergent; washing with hypotonic or isotonic washes; the use of nuclease enzyme and an oxidising agent.