<p>The cause of osteoarthritis -- other than known risk factors such as age or earlier injury -- is not yet known. The researchers at the MedUni Vienna have discovered, however, that certain proteins known as lectins, and in particular galectins, have a role to play in the painful wear and tear of the joints.</p><p>These new findings, according to the vision of the MedUni Vienna researchers, could lead to galectins in future being used both in the treatment and, as bio-markers, in the disease prediction of osteoarthritis.</p>