Surgeons in bid to regenerate knee cartilage

UK surgeons have pioneered a new knee operation that uses stem cells to coat damaged cartilage with the aim of preventing the development of arthritis.

The aim is to regenerate the remaining tissue and create a permanent "like-for-like" replacement.

Patients who undergo the operation have the cartilage cut and tidied and undergo microfracture, but their cartilage tissue is then coated with a substance made up of bone marrow cells from their hip, platelet gel and hyaluronic acid.

During the 30-minute procedure, the bone marrow sample is spun