A walking knee pain can be caused by several reasons: 1, osteoarthritis of the knee joint, osteoarthritis of the knee joint can often involve the cartilage, soft tissue, meniscus of the knee joint, resulting in secondary injury or strain. When the meniscus of the knee is damaged or torn at the anterior or posterior corner of the meniscus, it can cause pain in the knee joint when walking, often when the joint flexes and extends, and then the MRI of the meniscus should be checked for diagnosis and treatment. Injuries to the peripheral ligaments, such as the patellar ligament, quadriceps tendon, and goose foot, can also have pain in the peripheral ligaments of the knee when they are injured, which should be diagnosed by early examination and MRI of the knee joint.