Stem cells that could be key for maintaining and repairing the body's knee joints have been identified by scientists in Aberdeen.

Researchers from Aberdeen University's Centre for Arthritis and Musculoskeletal Health published the findings after a five-year study.

Our joints are surrounded by a layer of connective tissue called the synovium with injuries or conditions such as arthritis causing the build up of fluid which leads to pain or swelling in these areas.

Professor Cosimo De Bari said: "By identifying and understanding these stem cells more fully, it puts us in a better position down the line to be able to target them with drugs or other treatments.

"Ideally we want to be able to get to a stage where we can give ageing cells that are losing their function a boost.

"We want to prevent joint damage and arthritis or treat arthritis at an early stage. Once the damage is done, it is difficult to do anything the challenge is to see if we can support the stem cells present in the joint to make sure they maintain their functionality."