Downstairs knee pain walking without pain may be chondromalacia patella, meniscus injury, arthritis and other reasons.
1. Chondromalacia patella: usually because of the early degeneration of the patellar cartilage, but also make the local cartilage parts of the pain, knee weakness and other reactions, prevalent in young people and middle-aged people, will show the knee flexion and extension pain, down the stairs in the process of joint flexion and extension pain may be obvious symptoms, the early part of the joints may not have pain or other symptoms of discomfort.
2. Meniscus injury: generally is the lower limb overactivity, engaged in heavy physical labor and heavy trauma and other reasons, easy to cause meniscus injury, the knee in the stairs meniscus to withstand the external force will cause knee pain, a short period of time may appear to walk without pain symptoms.
3. Arthritis: arthritis can lead to different degrees of damage to the knee joints, resulting in cartilage or synovial membrane damage, which causes knee pain when going down the stairs, serious joint swelling and pain symptoms, walking range is relatively small, some people do not cause pain.
Knee pain when walking down the stairs can go to the hospital to do knee joint nuclear magnetic or X-ray examination, diagnose the cause of the disease and then treatment. Short time to reduce the knee force, appropriate to rest mainly.