We have been provided bones as infrastructure. The meeting points of various bones in our body are structured with a synovial fluid for friction free movement and ligaments for stability as also muscles attached to bones thru tendons for range of movements. These are called Joints. In some joints like our backbone there are discs for stability and movements. Wear and tear mechanism wears out these joints giving rise to discomfort and pain especially on movement. Lifestyle plays a big role in keeping joints healthy.