What is a cross-belt? Cross-shaped belt is two cross-shaped belts connecting thigh bone and calf bone, which are called front and rear cross-shaped belts respectively (there are also front, inner and outer auxiliary belts). In addition to driving the linkage between the thigh and the calf, it can also stabilize the knee joint and prevent the displacement of the big and calf bones when the knee joint is bent or stretched. It can be said that it is the primary contributor to stabilizing the knee joint movement.
What is meniscus cartilage? As for meniscus cartilage, there are two cartilage pads on the articular surface at the top of calf bone, that is, between thigh and femur, behind patella, which are called medial meniscus and lateral meniscus respectively. The medial meniscus is oval, thick and large. The outer side is round, thinner and smaller. Because it looks like a crescent moon, it is called meniscus cartilage. Its main function is to provide cushioning for articular cartilage, absorb the pressure of knee joint and reduce the collision and friction between cartilage. So some people describe the meniscus as a shock absorber of the knee joint.
Causes and treatment of cruciate injury The knee joint is the largest joint in the human body and usually bears more than half of the weight pressure of the whole body. When it is twisted by strong pulling, it may cause the cruciate ligament responsible for stability to tear or even break. Among the cruciate ligament lacerations caused by sports, only 20% are caused by impact, and the remaining 80% are caused by actions such as sliding, suddenly changing direction and jumping to the ground. Common sports that tear the cruciate ligament are football, rugby, tennis, basketball, tennis, volleyball, hockey, dance, gymnastics and so on.
The injury of cruciate ligament can be divided into grade one, two and three lacerations. Level 1 can recover well within 4 to 6 weeks through self-healing. In the second stage, physical therapy or hyperplastic therapy (hyperplastic drugs, such as autologous platelet growth factor and high-concentration glucose water, etc., are accurately injected into the torn cruciate ligament or meniscus cartilage, and then repopulate and repair the focus) is adopted according to the severity.
Causes and treatment of meniscus cartilage injury When knee flexion and extension exceed a certain angle and rotate together, meniscus may be pinched. Once an injury occurs, the meniscus will not be able to share the pressure absorbed by the articular cartilage, which will cause the cartilage to wear, protrude or even rupture, especially when the knee falls from a height at a critical point, and it will turn inward or outward, which is the most likely to be injured. Meniscus injury is generally caused by sports injury, especially meniscus rupture caused by playing basketball.
When the meniscus is injured, because it is always in a dynamic state, there is no way to stabilize it, and there are few self-healing factors in the knee joint, so it is difficult to recover on its own. Therefore, if the meniscus breaks, most of them need surgery. If it is a serious meniscus laceration, arthroscopic surgery is needed for debridement and repair.
Cross injury and meniscus injury will directly affect degenerative arthritis. Degenerative knee arthritis is caused by cartilage wear of knee joint, which is common in middle-aged and elderly people over 50 years old, mostly women, and usually has obvious pain on the inside of knee joint. Because cruciate ligament and meniscus cartilage will directly affect the occurrence of degenerative knee arthritis, patients should pay attention to the exercise training of knee joint and reduce weight-bearing exercise after receiving treatment and improvement.
As for ordinary people, if their knees hurt, they should seek medical advice as soon as possible. If the problem belongs to the injury of cruciate ligament and meniscus cartilage, it must be treated thoroughly to avoid the early occurrence of degenerative arthritis.