What should I do for knee pain caused by degenerative disease in the elderly?

For knee pain caused by degeneration, physiotherapy and painkillers can be used to relieve the pain. However, these modalities only provide temporary pain relief and do not change the underlying problem of cartilage loss.
For degenerative knee pain in the elderly, the disease should be slowed down by losing weight, reducing weight bearing (climbing stairs, hills, etc.), avoiding heavy objects and reducing strenuous activity. Oral painkillers should also be taken to control symptoms.
Patients with severe osteoarthritis due to degenerative disease that cannot be relieved by medication or who cannot tolerate the side effects of medication need surgery.