I have studied your case.
According to your symptoms and findings there is osteoarthritis
of your knee.
You can start cartilage
protecting medication like chondritin sulphate, that you need to take for couple of months.Physiotherapy
and tens will help, along with knee exercises.
Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries.
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Wishing you good health.