Patient Question: Both knee joints have been degenerating for more than 2 years. Recently, I have been walking a bit hard, and I feel pain in my legs after walking for a while, and I feel pain and stuck when going up and down stairs. Sometimes I don’t dare to straighten my legs at once. I had an MRI of my left knee, which showed fluid accumulation in the suprapatellar joint and joint cavity, patchy high signal shadow on the posterior edge of the patella, and osteophytes on the edges of the bones that make up the joint. Reply: From the condition you reflect, consider the patellofemoral joint disorder, formerly also known as chondromalacia patellae, cartilage degeneration is the main. Suggestions: 1, try to reduce up and down the stairs, climbing, hard pedaling bicycle and other activities; 2, pay attention to joint warmth; 3, the current drug treatment is possible, can also do physical therapy; 4, by the above treatment if the effect is not good, feasible arthroscopic investigation.