It may be that genetic changes that are responsible for high bone mass cause osteoarthritis through direct effects on cartilage, and these factors could help shed light on the role of new biological pathways involved in the development of osteoarthritis.
Scientists at the University of Bristol's Musculoskeletal Research Unit are investigating why people with very dense bones are more likely to develop the painful condition of osteoarthritis. Sarah Baker, specialist registrar at Southmead Hospital has been awarded a clinical PhD studentship of £164,000 over three years from Arthritis Research UK. Osteoarthritis is a common joint condition that affects around eight million people in the UK and leads to stiff, painful joints. Treatment is limited to pain relief or ultimately joint replacement surgery and there is no effective means of preventing progression in early disease. The main risk factors are ageing, being obese, and having an joint injury earlier in life, but little is known about the causes of the condition. Now Baker, who will be working at the University's Musculoskeletal Research Unit based at Southmead Hospital, plans to study a group of 300 people from England and Wales who have extremely high bone mass, to find out more about the role of metabolic and genetic factors in increasing the risk of osteoarthritis. 'Several studies suggest that patients with osteoarthritis tend to have denser bones, and recent studies have identified a pathway between bone and fat, with several points that could be targeted for new treatments,' explained Baker.
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