Dear Concerned., Thanks for writing to us. As per the available history, she is probably having Osteoarthritis /Joint Failure due to usually ageing process//overweight// Degeneration of soft tissues and erosion of Cartillages in knee joint. Also accumulation of fluid or effusion. She will have to first undergo baseline blood and urine investigations//X Ray of the affected joint/joints AP and lateral views and MRI as required. In addition Lipid Profile//urea ,uric acid levels ,creatinine are also contributory. Coming to the treatment part(1)CONSERVATIVE;- initially, she will have to do dieting and reduce weight//Analgesics such as Paracetamol //Chondroitin sulphate, Vitamin and calcium suppliments//Physiotherapy//reduction of effusion if it is there by an orthopedic surgeon//Knee braces as per Ortho advice to give stability to joint. (2)SURGERY;-Replacement of knee joint in a tertiary care centre will give a definitive cure. You are requested to kindly follow as per above protocol., Wishing you a speedy recovery., Best Regards., Dr Lt Cdr ASN Bhushan., Ex-navy.