Certain pathologies that resemble the symptoms of osteoarthritis. They will be excluded from the diagnosis by your doctor. This is why he or she may ask for further tests.
The differentiation between osteoarthritis of the knee and diseases that are similar occurs at the beginning stage of osteoarthritis.
The list of diseases similar to knee osteoarthritis presented above is not exhaustive. There are other conditions not listed here, but less common, which can symptomatically resemble osteoarthritis.