Hello, Thanks for your query. Although it isn t possible to diagnose your mother condition without an examination and a few tests, her history is suggestive of osteoarthritis right knee. Often called wear-and-tear arthritis, osteoarthritis occurs when the protective cartilage on the ends of your bones wears down over time. Osteoarthritis treatments can slow the progression of the disease, relieve pain and improve joint function. I would suggest getting this evaluated by an orthopedician for detailed examination. She may get the X-ray/MRI, some blood tests and joint fluid analysis under his/her guidance to reach the accurate diagnosis. The following measures will help with the pain Do regular Exercise. Exercise can increase endurance and strengthen the muscles around joint, making her joint more stable. Stick to gentle exercises, such as walking, biking or swimming. Lose weight if obese- Being overweight or obese increases the stress on weight-bearing joints, such as knees and hips. Even a small amount of weight loss can relieve some pressure and reduce pain. Use heat and cold to manage pain. Both heat and cold can relieve pain in joint. Heat also relieves stiffness and cold can relieve muscle spasms. Apply over-the-counter pain creams. Creams and gels available at the drugstore may provide temporary relief from osteoarthritis pain. Take diet rich in calcium, vitamin d3 and minerals. I do hope that you have found something helpful and I will be glad to answer any further query. Take care