Have you ever experienced a situation in which your knee is dislocated and spontaneously fitted?
Have you suffered further knee injuries as a result?
Want to know more about knee dislocations and the risks involved?
Do you know the risks for people with knee dislocations?
If you are one of the people who have experienced a dislocation or partial dislocation of the knee and you want to learn about your problem, we recommend that you read on.
Regarding knee dislocations, it should be said that it is better to classify this term scientifically, which means the following two cases of knee dislocations:
Knee dislocation or patellar dislocation of the knee
What are the differences between these two phenomena in terms of physiology and mechanism? The prevalence of knee dislocations is lower than patellar dislocations of the knee.
In the following, we want to say what injuries and problems those who suffer from knee dislocation and then spontaneous fitting experience after it.
Knee joint anatomy
The knee is one of the most widely used joints in humans, which will be under a lot of pressure in our daily lives from the moment we stand on our feet. Therefore, the problems that occur for this joint are often more obvious and common than the problems that occur for other joints in the body. One of the problems that occur in the knee joint is knee dislocations.
The knee joint is made up of bones, cartilage, ligaments and tendons, Scholarships, menisci, and other soft tissues. All of these tissues play an important role in stabilizing the knee. Part of the stability of the knee is provided by ligaments and part by the strength of the supporting muscles of the knee, including the quadriceps.
In the lower part of the femur, which is above the knee joint and forms the bone surface above the knee joint, there are two protrusions, one inside and one outside the lower part of the knee, which are called internal condyles and external condyles at the end of the thigh. There is a groove in the front end of the thigh between these two condyles. This groove is similar to his English letter. The trochlear groove is called the pulmonary groove or Patellofemoral groove.
The patella of our knee is located in this groove and moves up and down. The dorsal surface of the patella and the anterior surface of the groove we mentioned are covered with articular cartilage.
The patella of the knee plays an important role in the mechanism of the knee extensor, that when we want to get our knee straight and extend it, it is very important that the patella is located in this groove as standard and they move up and down.
Occasionally there are problems with the shape of the groove and its location, or there are problems with bone development or adjacent ligaments that prevent the patella from moving normally through the groove.
Needless to say, whenever any of the components involved in the knee joint are damaged, the knee joint becomes unstable and conditions are created that may cause the person to become irritated.
We must say that any injury to the knee joint predisposes a person to develop osteoarthritis and exacerbate the symptoms of degenerative knee arthritis in the near future.
Mechanism of knee joint dislocation
For a knee dislocation to occur, a great deal of force must be applied to the joint. This force must be so great that it can rupture the lateral cruciate ligaments of the knee, And these ligaments rupture. The knee loses its original support. Restraints on the knee in order not to move around, it goes in such a way that the knee joint is displaced from its original place and the so-called knee joint is dislocated.
Most of the time the knee joint is broken in traffic accidents.
The dislocated knee joint usually settles on its own at the site of the accident, but knee pain and swelling are usually constant symptoms that will lead to dislocation of the knee joint. Dislocation of the knee joint will cause painful movement of the knee. The injured person should stop or weigh the so-called doctors.
The deformity created by the knee joint is quite obvious to the eye.
Another important point to note is that the back of the knee is sensitively adjacent to the arteries and nerves, and in fact the arteries and nerves behind the knee are very close to the bilateral surface joints when dislocation of the knee joint and bone displacement occur. These nerve vessels may be severely stretched or compressed and severely damaged.
Arteries and nerves can cause dangerous injuries when severely strained and stretched.
Nerves can be severed if injured, causing sensory paralysis of the lower parts of the knee, so it is important that a patient with suspected knee dislocation be carefully examined by a physician.
Diagnosis of Knee Dislocation Definitive diagnosis should be with radiography. Plain X-ray radiography can lead us to a definitive diagnosis of knee joint dislocation. When there is a suspicion of vascular damage, angiographies should be used accordingly.
When a dislocation of the knee joint occurs, it should be started as soon as possible. In many cases, the dislocation of the knee joint may occur spontaneously at the site of the accident because there are no surrounding protective ligaments. Inflation starts after settling.
When a person is transported from the accident site to the hospital, it means that the person has a spontaneous placement in the joint during the transfer and movement distance.
Now that the person has a dislocated knee joint and there is no spontaneous implantation at the scene, the implantation must be done in a medical center. It does not require anesthesia and can be done with little force. Sometimes the overlap is closed because the soft tissues are trapped between the displaced parts.
When this is not successful, the surgeon must surgically remove the sagging soft tissue and perform the implant.
When the dislocation is open, it means that there is a skin wound that is attached to the joint surface or the arteries are damaged and need to be repaired. Knee movement begins in the normal range.
Now that a few weeks to a few months have passed since joint physiotherapy, if the patient needs surgery to repair the ligaments, it will be a good time for surgery.
Patellar dislocation of the knee
Patellar dislocations of the knee occur due to impact and direct pressure on the patella.
Mechanism : Occurs when the bent knee strikes the patella. Due to the direct impact of the patella, it goes out. In some cases, the patellar dislocation settles on its own before the patient sees a doctor.
Another case that should be mentioned about patellar dislocations of the knee is congenital patellar dislocation. When these babies are born, the patella is located outside the knee at birth. The patella is smaller than normal in size. It has a shape and may not be smooth easily.
Symptoms of patellar dislocation
When we look at the person’s knees, we see that on the affected side, the patella is not in its original position in front and in the center, and the patella is moved outwards. There may be swelling, and there may be dead blood.
The inner side of the knee may be sensitive and patients usually cannot move their limbs, and there is resistance to doctors trying to move the knee on the patient side.
How is patellar dislocation treated?
For reduction, the doctor pushes the outside of the patella inward due to pressure, which is usually done without the need for anesthesia or numbness. The limb should remain immobile for a month.
During this period, the patient begins isometric exercises according to the conditions and with the opinion of the doctor so that the supporting muscles of the knee do not become weak. After the cast is removed, standard physiotherapy exercises to return the knee to its normal range of motion is necessary.
What are recurrent patellar dislocations?
It is a condition in which the patella moves more than once and may settle on its own. Girls have this disorder more than boys. When an individual patella occurs, the probability of subsequent dislocations will be 50% higher than normal in society.
And a person who experiences patellar dislocation twice is 70 to 80 percent more likely to have a subsequent dislocation.
What causes patellar dislocation?
Any factor that causes the patella to become unstable in front of the knee can cause the bone to dislodge.
The patella is located inside the groove between the lower condyles of the femur and the patellofemoral groove and goes up and down. Sometimes this groove is shallow.
The patella is located in front of the upper knee, or the patella is small, or the ligaments of the body are generally loose, or the tibia rotates outward, or the so-called tibia torsion occurs, or where the patella tendon connects to the top of the tibia. Once the patella is removed, a membrane of soft tissue inside the patella will rupture. Often this membrane does not heal and a looseness develops that provides the basis for subsequent recurrent patellar dislocations.
Another point is that when a person suffers the first patellar dislocation with a severe blow to the knee, subsequent dislocations of the damaged patella will be replaced with less severe blows.
Another case is that a person with recurrent patellar dislocation may be painful if we press the inside of the patella and the inside of the knee down.
People with recurrent patellar dislocations the patient feels panic when the doctor tries to push the patella outward because he thinks the patella is dislocated and prevents the doctor from continuing to examine. This test is called the apprehension test.
One of the principles of patellar dislocation diagnosis is a simple X-ray that should be done. When the doctor looks at the picture, he sees that the patella is displaced in the lower groove of the femur.
Treatment of patellar dislocation
The first step is to manage people non-surgically. The basis of treatment in a person with recurrent patellar dislocation is to strengthen the quadriceps muscles. The part above and inside the patella is called the vmo.
Stretching exercises of the external structures of the knee should also be performed under the supervision of a physician, and if non-surgical measures are not responsive, surgery may be required. There are different types of surgery that are selected according to the patient’s condition. For example, creating incisions in the tissues on the outside of the patella so that these tissues become looser and less patella extends outward, or strengthening the tissues inside the patella by moving the muscle tendon behind the thigh.
Lowering the patella by a method called osteotomy or moving the tibia protrusion downwards and inwards.
What are the complications of knee dislocations?
When there is a dislocation of the knee joint, you should know that it can cause a very serious dislocation and problem for the arteries behind the knee.
Amputation and sometimes even death can be complications of injuries to the arteries in the back and nerves behind the knee during a knee dislocation.
When the arachnids are cut or their blood flow is disrupted, they gradually show discoloration and changes in the temperature of the skin below the knee.
A person may lose a limb if it is golden age to repair blood vessels and return blood flow to the tissues below the knee.
What are the complications of patellar dislocations of the knee?
When acute knee dislocation occurs, cartilaginous bone fractures or so-called Osteochondral fractures may occur. Also, a person who once has a patellar dislocation has a high risk of recurrent dislocation. These people have a much higher risk of developing more severe early-onset osteoarthritis and degenerative arthritis of the knee.
If surgery is needed for these people, surgical complications such as neurovascular injuries, infections, deep leg vein thrombosis, and subsequent pulmonary embolism are possible.