How the meniscus is divided into red and white zones

It is divided into red zones according to whether it contains blood vessels and whether it has the ability to repair and regenerate after injury.

and white zones. In the red zone of the meniscus, the blood of the meniscus** comes from the branches of the internal and external arteries of the knee, which are in the joint capsule.

A network of blood vessels is formed. These come from the joint capsule and synovium.

The arterial mesh provides only 10% of the meniscus periphery to 30% of the fibrous blood vessels, and this part is in the arthroscopy.

This is called the red zone, and the injury can be healed after repair.

The white area of the meniscus, ** part of the blood vessel, relies on the penetration of synovial fluid to nourish, so it lacks the ability to repair and regenerate after injury.

MeniscusRed ZoneThe difference with the white zone is the presence or absence of blood**. The red zone of the meniscus is the area on the lateral side of the meniscus 1 3 where there is good blood**. The white area of the meniscus is the area of the medial meniscus 1 3 without blood**.

The meniscus is a medial and lateral meniscus on the articular surface of the tibia with a thicker margin, with the joint capsule.

Tightly connected, thin in the center, and free.

In addition to the partial damage to the margins, which can be repaired on its own, the meniscus cannot be repaired after rupture, and after the meniscus is removed, it can be caused by the synovium.

Regenerates a fibrocartilaginous, thin, narrow meniscus.

1. It is easy to cause meniscus injury.

1. Engage in football or basketball games.

When running fast, switchback, dancing and other sports.

2. If the weight is too large, it will be on the knee joint.

The greater the stress, the higher the chance of meniscus injury.

3. When you sit for a long time at work, and suddenly stand up and turn around.

4. When riding a bicycle in a hurry to get off the station and stand unsteadily.

5. When working in a squatting or semi-squatting position for a long time, and repeatedly squatting and standing up.

2. Prevention of meniscus injury:

1. Pay attention to the exercise posture and intensity when exercising, and wear sports protective gear.

2. Make full use of the tools around you to help reduce the risk of meniscus injury caused by accidents, such as using handrails to help stabilize your body and then walk when getting on and off the bus; If you have professional habits, it is best to change your working posture and take a break every once in a while.

The above content refers to Encyclopedia - Meniscus.

The above content refers to Encyclopedia - Meniscus Red Zone.

The above content refers to the Encyclopedia - Meniscus White Zone.

The above content refers to People's Daily Online-Mild meniscus injury can recover on its own.

The cross section of the meniscus, close to the joint capsule, the 1 3 is the red zone, that is, there is blood**, the middle 1 3 has no red and white zone, that is, there is part of the blood**, and the 1 3 inside is the white zone, no blood**.

Hello, meniscus injury can not only think of pain relief to solve the problem, but also from the root to the recovery, when suspected meniscus injury, we can conduct our own examination, the first is to do knee hyperextension test, knee hyperflexion test, meniscus pop experiment, knee grinding test and knee gravity test for preliminary diagnosis, knee meniscus injury. External meniscus - -shu - luo - ping - pain - tie, to restore.

The second degree of meniscus is a mild injury, which can be conservative according to the clinical manifestations**, and pay attention to some bad habits in life and diet.

The role of the meniscus:

1) Deepen the concavity of the tibial condyle to accommodate the concavity of the femoral condyle and strengthen the stability of the joint.

2) Coordinate with the cruciate ligament to control and guide the mild spiral movement of the knee joint.

3) It is elastic, can withstand gravity and absorb oscillations.

4) Spread synovial fluid and lubricate the joints.

5) Nutritional status: the periphery of the meniscus is rich in blood vascularity, which can be repaired after injury; The body is vascular, and nutrition is made by synovial fluid**, which is difficult to repair after injury.

6) Medial meniscus: C-shaped, combined with the deep fibers of the medial collateral ligament. Lateral meniscus: O-shaped, with large range of motion.

7) Discoid meniscus: easily damaged. Lateral is more common.

Meniscus injury of 2-3 degrees is not normal and should be prompted**. You can take conservative**, meniscus flat pain tie, Gu Xu Ningtang's kind, according to the clinical situation is not serious, you can not cut your knee for correction, suturing, these actions, can be fixed, drugs**, so that your meniscus injury recovery.

Although strength training methods are quite effective for meniscus prevention, strength training methods cannot be relied on to prevent knee pain caused by running. In your usual running training, pay attention to the following details, which may be more helpful to your knees.

1.Warm-up activities: Warm-up activities before training must be sufficient, do not directly go to a large amount of exercise, injuries most often occur when fatigue or lack of energy.

2.Running posture: Pay attention to your running posture and don't land on just one side of one foot to avoid injury to your knees from the wrong posture.

3.Pay attention to the muscles of the thighs to avoid direct impact from the feet of the knees.

4.When knee discomfort occurs, reduce the amount and frequency of exercise appropriately, and avoid strenuous running, jumping and weight-bearing.

5.Pay attention to the warmth of your knees and wear protective gear during exercise.

6.When pulling with weights, especially when going downhill, avoid impacting your knees.

7.The development of muscles can relieve the pressure on the knee in certain situations, which can minimize the damage to the knee. Usually do more leg muscle exercises to minimize the burden on the knees.

Consciously strengthen the quadriceps muscles (front of the thigh) and cruciate ligaments, strengthen the inner quadriceps muscles and thigh muscles, and combine muscle stretching, walking, horse walking or wall exercises to pave the way for the patella to move smoothly in the femoral end.

8.Before running, rub the lower edge of your knee with the fingers of both hands to promote the protection of your knee during the lubrication night.

9.Stretching the elongated hamstrings and patellofemoral joints is the key to reducing the chance of knee injuries and preventing meniscus injuries. Because many injuries occur when the physical strength is not good, when the thighs are tired, they will unconsciously lock the joints when walking, the meaning of the lock joint is to stretch the legs straight, which can reduce the burden on the thigh muscles and temporarily relax their muscles, but it is easy to cause knee strain, knee impact injury, ankle strain, ankle sprain, and lumbar muscle strain.

The main cause is degeneration, mainly for senile meniscus injury, degenerative meniscus injury, this condition is mainly degeneration, that is, some age-related lesions. Therefore, for different age groups, it may be mainly due to different reasons, young and middle-aged people are mainly exercise, or external trauma load, and for the elderly, it is the structural degeneration caused by age to form damage.

Conservative ** approach to the meniscus:

For milder MRI I and II degree meniscus injuries, conservative **, rugu. Shun = Fudo meniscus sticker. The goal is to protect laceration-damaged tissue, reduce pain and swelling, and restore muscle tone and range of motion.

It can be carried out with external fixation methods such as bed rest, tubular cast, elastic bandage, compression bandage, knee support, etc., while avoiding falling to the ground or weight-bearing activities.

The red zone of the meniscus bai is a little blood.

du**, there is no blood supply in the white area.

should be the DAO.

The color of the meniscus is grayish-white, smooth and shiny, tough and has a certain elasticity, which can cushion the impact of the two bone surfaces, absorb **, disperse synovial fluid, increase lubrication, reduce friction, and protect joints. The red zone of the meniscus has a little blood**, and the white zone has no blood**.

The anterior horn of the medial meniscus attaches before the attachment point of the anterior cruciate ligament, and the posterior horn attaches between the intercondylar tibial bulge and the posterior cruciate ligament attachment point, and its middle outer border is tightly connected to the medial collateral ligament.

The anterior horn of the lateral meniscus attaches before the attachment point of the anterior cruciate ligament, and the posterior horn attaches before the posterior horn of the medial meniscus. Asians have a higher chance of injury on the outside than on the inside.

The red area of the meniscus has a little blood**, and the white area has no blood**, so there is no self-healing ability after a meniscus injury.