Osteoarthritis is the most common disease of joints adults suffer from worldwide.

Osteoarthritis is the most prevalent form of arthritis and occurs especially in the knee joint. It affects nearly 6% of all adults, but more women are affected than men. “According to a number of published reports, anywhere from 6% to over 13% of men, but between 7% and 19% of women, over 45 years of age are affected, resulting in a 45% less risk of incidence in men.

Approximately 50% of the 65+ population are affected by OA in the knee, but it can also affect young people.

Osteoarthritis of the knee (OA Knee) is one of the five leading causes of disability among elderly men and women. The risk for disability from OA Knee is as great as that from cardiovascular disease.

The ACL curse

The ACL curse

The 2015 season has already been marred by a spate of ACL injuries.

Australian Rules Football (AFL) is known for its high level of physical body contact. These high impact collisions can occur from any direction. Players typically wear no protective padding of any kind except for a mouth guard. As such, impact injury rates tend to be high.

The 2013 AFL season could legitimately be renamed the "Battle of Wounded Knee".

The 2013 injury report, showed there were 23 knee reconstructions performed on AFL in 2013, up from 16 in 2012 and 20 in 2011.

While no singular reason for this year's rush of ACL injuries can be pinpointed, research over almost two decades has found several predisposing factors for the AFL star's worst nightmare.