BBC hit series Strictly Come Dancing between 2014-2016, has osteoarthritis. While she suffers with this painful condition, however, she is still determined to keep performing.The dancer, 38, has now admitted that she has been forced to slow down on the dance floor after being diagnosed with osteoarthritis - the most common form of arthritis that makes joints painful and stiff.Aside from the impact this has had on her dancing career, Joanne has revealed that she also needs help getting out of cars and even finds it tricky walking downhill.Joanne first suspected something was wrong on the 2016 Strictly tour, when she woke up one day to find one knee “so swollen and so stiff”.The arthritis diagnosis that followed came as a huge shock to the.