Cone under the knee: reasons for the appearance

Knee joints are a very important element in the human musculoskeletal system, so treat them carefully and carefully. For example, if you notice that you have a cone under your knee, be sure to find out the causes of this phenomenon and take appropriate measures. The most common factors causing pain and leading to compaction are discussed below.

Beck's cyst

Diagnosis of this disease can be in acute pain, localized in the popliteal cavity, and a small puffiness, in the place of which a lump under the knee may appear. The fact that the inner surface of human joints is covered with a shell that produces synovial fluid. The latter plays the role of lubricant. With inflammation of the shell, fluid production increases. It is her excess leads to compression of the shell and its swelling, and this explains the unpleasant sensations and the appearance of education, soft to the touch and responding pain at every touch. At the initial stage, the cyst resembles a pea, but grows rather quickly and becomes well marked. To get rid of it it is possible by means of conservative treatment (reception of anti-inflammatory preparations) or pumping out of a liquid by a thick needle.

A purulent-inflammatory process

A bump under the knee may indicate a neglected inflammatory process. Most likely, the patient in the past had infected wounds in the ankle: the infection penetrated the popliteal lymph nodes, which increased in size. In medicine, this condition is designated by the term "purulent lymphadenitis". It can lead to abscess popliteal fossa. To avoid such complications, it is necessary to contact the surgeon as soon as possible, he will open the abscess and clean it.

Vascular problems

Quite often the lump under the knee is a sign that the tibial nerve is inflamed, passing through the bottom of the popliteal fossa. Identify the inflammation possible by a small swelling and acute pain that occurs during walking and is strengthened by flexing the leg. In neglected cases, it spreads throughout the limbs up to the foot. Tendon reflexes in this case change, muscle tone deteriorates. Only the surgical intervention can help the patient.

Aneurysm

The cone under the knee at the back, which pulses and "pulls" the leg, indicates an aneurysm of the corresponding artery. This is explained by the fact that the artery walls are gradually stratified, and it protrudes outward. If you do not take measures, the patient may begin extensive bleeding.

Thrombosis

Does the leg ache under the knee from behind? It is likely that the cause lies in thrombosis of the popliteal vein. It should be noted that this diagnosis is extremely rare and is recognized by doctors with great difficulty. In most cases, it can be fixed only after serious complications, such as thromboembolism. The presence of thrombi can be detected by ultrasound examination of blood vessels. Depending on their size, doctors prescribe conservative or surgical treatment.