The weather is getting colder and colder, and many of our friends are becoming less active and lack professional maintenance knowledge. A little bit of a simple activity, going up and down the stairs, sitting or standing up after a long squat, will make you feel a vague pain in your knee joint, but you don’t know what to do.
See for yourself: knee degeneration schedule
Do your own calculations: how much pressure on the knee
The knee, the largest and most complex joint in the body, is also the largest weight-bearing joint (it can normally support 35 kg) and plays a vital role in upright human walking.
As we age, wear and tear of the knee joint is inevitable and irreversible, and the degree of wear and tear is directly proportional to the amount of weight carried. The greater the weight on the knee, the greater the chance of cartilage wear and tear, and the more likely the tendons around the joint are to become strained, all of which accelerates the degeneration of the knee joint.
In a pinch.
When a person weighing 70 kg climbs the stairs, for each step, the knee has to bear about 210 kg of weight (70 * 3 times), so orthopedic surgeons do not recommend climbing the stairs to exercise; and when he descends the stairs, for each step, the knee has to bear about 280 kg of weight (70 * 4 times)! This is also the scientific truth that “it is easy to go up and hard to go down”.
Knowing the pressure on different knee joints in different postures, there is a scientific basis for acting according to your own situation.
Self-diagnosis: 7 major causes of knee pain & how to deal with it
Chronic synovitis
This presents as chronic pain and swelling in the knee joint. Synovial effusion, synovial hyperplasia, hypertrophy and even inflammation can be seen arthroscopically.
Osteoarthritis
The joint pain is obvious when getting up or going up or down stairs after prolonged sitting or squatting, and relieved after rest. In addition to joint swelling and pain and restricted movement, narrowing of the joint space, bone spur growth and joint deformation can be seen on X-rays.
Free body in the knee joint
Suddenly, when walking, the leg becomes weak and the joint feels stuck, and it cannot move in one position. This is because the free body is stuck in the joint space after the articular cartilage has worn off.
Bursitis
A history of trauma or cold, manifested as pain above the kneecap or on the inside of the upper tibia. There is an area on the inside of the knee joint that is medically known as the “goose’s foot”, where three tendons converge like a goose’s foot, hence the name. Underneath the tendons are lubricated cystic structures that can become inflamed and painful if there is trauma or cold.
Abnormal patella
The patella, commonly referred to as the “glass cap”, acts as a glide during knee movement, increasing the efficiency of the mechanical work of the muscles. Abnormalities of the patella (such as patellar cartilage wear, patellar displacement, etc.) can lead to soreness and weakness of the knee joint after activity, or even outward dislocation of the patella.
Pseudogout
A disease caused by the deposition of crystals of a compound called calcium pyrophosphate dihydrate in the knee joint, with episodes of painful swelling, high skin temperature, and limited function. x-rays show calcification of the meniscus and articular cartilage surfaces.
Entrapment pain caused by hip joint lesions
Because of the interconnection of many tendons, certain hip lesions (e.g. femoral head necrosis, hip tuberculosis, etc.) first manifest as symptoms of knee pain.