Welcome to HCM
The most probable cause of this problem is a mechanical stress on on ur knee joint resulting in Osteo arthritic changes. Pls do a xray KNee in standing posture to assess the joint and can take Homeopathic
remedies to combat the inflammation and pain. Also should take Nutritional Supplements like glucosamine
hydrochloride with chondroitin, Vit D3, Calcium, Magnesium
and Vit B complex to aid in joint cartilage repair
. Warm application on knee joint will be helpful to reduce pain and (if)swelling.
Hope u are satisfied
Dr Arif Hussain T M