The relationship between knee weight and body position 1, when coming, the knee weight is almost zero; 2, when coming and walking, the knee weight is about 1-2 times; 3, slope or up and down the ladder, the knee weight is about 3-4 times; 4, when the knee weight is about 4 times; 5, when the knee weight is about 6 times; 6, when kneeling, the knee weight is about 8 times. When kneeling, the knee is about 8 times heavier. The state of the joint Before the age of 15, the knee joint is in the developmental stage, and most of the growing pains in adolescence occur near the knee joint. Between the ages of 15 and 30, the knee joint is in a “perfect state” and works tirelessly. As long as the knee joint tissue is not damaged, it is basically not felt. Between the ages of 30 and 40, the patellofemoral cartilage undergoes early and mild wear and tear, resulting in a period of weakness and short-term knee pain that lasts a few weeks to a few months, and some people do not even notice it. Patellofemoral cartilage is a 3 – 5 mm thick layer of hyaline cartilage in the human knee joint that cushions the knee joint from the impact of movement. However, because the patellar cartilage has no nerve distribution, it will only sound an “early warning signal” once during the vulnerable period before the full layer wears out, and strenuous exercise should be avoided during this period. From this time on, the knee joint can no longer be used as you wish. Between the ages of 40 and 50, the medial side of the knee joint tends to become sore after walking long distances, which is relieved by gentle hand rubbing. In the knee joint, the meniscus is used to cushion vibrations and maintain stability; 60% of the body’s weight is supported by the medial side of the knee joint, so the degeneration of the medial meniscus occurs earlier. Because of the nerve distribution in the meniscus, people can feel the pain and soreness during the degeneration process. This phenomenon is a reminder that it is time to start taking care of your joints. Over the age of 50, the knee joint will feel significant pain because the patellar cartilage has reached the end of its “useful life”, the cartilage is worn down and arthritis has developed. This is the time to conserve the use of the joint, reduce strenuous exercise, especially stairs and climbing, and use crutches to reduce the stress on the knee joint if necessary. Daily care for sore knees Don’t walk for too long, and rest as soon as your knee feels uncomfortable. Do not do heavy exercise, such as running, high jumping, or long jumping. Avoid half squatting, full squatting or kneeling positions, such as squatting horse stance. Do not do semi-flexion rotation of the knee to prevent hallux valgus injury. Maintain ideal weight to reduce the burden on the knee. Keep your knees warm, wear long pants and knee pads to protect your knees. Avoid lifting heavy objects and wearing high heels. Avoid trauma and overwork. The choice of shoes is important. A pair of shoes that fit can not only make you walk comfortably, but also reduce the impact and pressure on the knees during exercise; the instep part of the foot can be closely integrated with the shoe, and the width and length are appropriate to properly maintain the curvature of the arch; the weight of the shoe is light, and the sole should not be too soft and a little thick; the heel of the shoe can be about 2-3 cm high, and the sole is too flat so it is easy to get tired when walking; the sole has a non-slip The sole of the shoe has a non-slip pattern.