Swollen under the knee behind

Swelling under the knee can be a sign of various diseases. To determine the exact cause of the anomaly, consult a specialist. Only after a thorough clinical examination, history taking and additional examinations can one cope with the pathological process and restore the joy of free movement.

Causes of swelling under the knee

A tumor under the knee at the back appears due to various factors. Most often, a symptom occurs due to the following pathologies:

  • trauma;
  • acute inflammatory process in the joint or muscles;
  • destructive changes in the elements of the articular joint;
  • impaired blood circulation and lymphatic outflow;
  • peripheral nerve diseases.

The extent of the intervention depends on the nature of the process. The most successful patients are those who seek medical help on time.

Shishkevich Vladimir, orthopedic and traumatologistShishkevich Vladimir, orthopedic and traumatologist, project editor-in-chief ExpertNews.

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Pathology of articular bags

Inflammation in the articular membrane leads to excess production of synovial fluid. The pathological process is called “Baker’s cyst.” The tumor under the knee at the back is palpated as a soft mass.

The disease manifests itself as a violation of motor function: knee flexion and extension are difficult. The pain spreads from the knee to the calf muscle and down to the foot, often accompanied by numbness. The painless form becomes the reason for seeking medical help in the later stages.

A swelling can occur due to inflammation of the lymph nodes, increasing in size due to exposure to the pathogen.

Meniscus cysts

The meniscus is a formation of cartilage that provides optimal knee mobility. Injuries or degenerative processes cause the appearance of a cyst (cavity inside the cartilage, which is filled with fluid

Education provokes pain during walking. The tumor first appears in the lateral part of the joint (external or internal), and then extends to the posterior or anterior surface. Cyst growth can lead to the spread of puffiness outside the joint.

In the high-risk zone are young people who are actively involved in sports. In these cases, the disease is not given proper attention, and the process progresses.

A triggered cyst can cause arthrosis with deformation.

Goff’s disease

The knee is surrounded not only by the articular membrane, but also by the muscles, ligaments and subcutaneous fat. Hormonal and dystrophic changes provoke the destruction of adipose tissue. The disease progresses steadily, the patient complains of formation under the knee, which is swollen and painful.

Swelling in the back of the knee has a dense texture, pains are characterized as pulling. The pain syndrome is localized mainly on the inner surface of the articular joint. Movements are difficult, activity enhances discomfort.

Pathology of vessels and nerve fibers

Changes in the vessels located in the popliteal fossa can cause swelling under the knee behind.

The most common vascular pathology is manifested by problems such as thrombosis and aneurysm.

Vein disease is often accompanied by thrombosis. Soft tissue suffers from hypoxia, and blanching or blueness of the skin of the affected limb is associated with this. Patients note heaviness in the leg and pain. A blood clot blocks the lumen of the vessel, ischemia phenomena are observed. The problem requires urgent emergency measures. If it is not possible to conservatively restore patency, resort to surgery.

Pain as a result of an aneurysm manifests itself in the form of pulsation, which increases during exercise.

Peripheral nerve neuropathy is accompanied by a pain symptom and swelling. These phenomena are observed together with a decrease or absence of pain sensitivity along the nerve trunk. Painful sensations extend lower to the foot, caviar is painful on palpation.

Joint fractures

Injuries to the patella and meniscus, as well as bones, ligaments, often develop when falling, outdoor games.

Violation of the integrity of the structures of the knee leads to limited mobility and pain. The following symptoms indicate the presence of a fracture:

  • discoloration of the skin at the site of traumatic injury (blanching or redness);
  • subcutaneous hemorrhage;
  • increase or decrease in skin temperature at the site of damage.

Help should be provided on an emergency basis, as the knee is a difficult joint, and the restoration of its function requires the intervention of qualified medical personnel.


A correct and timely diagnosis ensures success in treatment. After a detailed analysis of anamnestic data and a clinical examination, the following examination methods must be prescribed:

  • radiography;
  • arthrography;
  • Ultrasound;
  • CT scan;
  • MRI;
  • scintigraphy (nucleicidal radioisotopes are used).

Knee puncture is necessary if an infectious process is suspected to determine the pathogen.

In order to obtain complete information about the state of the body, clinical blood and urine tests are collected, a biochemical study is conducted to determine rheumatic samples.


The volume and nature of the treatment depends on the pathology that caused the tumor in the knee. The timely implementation of conservative and surgical treatment methods helps to restore motor function and the disappearance of pain.

First aid for trauma

Traumatic knee damage requires compliance with the following emergency procedures:

  • immobilization;
  • the application of an elastic bandage;
  • applying cold to the affected area for 20 minutes;
  • the victim must be given a horizontal position and raise his leg (lay a pillow);
  • Iodine grid will help to remove swelling.

To cope with pain, you can use Paracetamol or Ibuprofen in tablets.

Traditional treatment

To stop inflammation using drugs from the group of anti-inflammatory non-steroid drugs in tablets or injections. The most popular drugs from this group:

Local exposure is permissible; for this, ointments, creams or gels are used.

Means for the local treatment of knee injuries should contain decongestant and cooling components. This is especially important at the beginning of treatment, as the warming effect can increase swelling and pain.

In order to enhance the therapeutic effect, injection solutions can be injected into the joint. For this, steroid hormones are used (Hydrocortisone, Dexamethasone, Diprospan)

To eliminate vascular problems are shown:

  1. anticoagulants (heparin)
  2. antiplatelet agents (acetylsalicylic acid, pentoxifylline
  3. venotonics (troxevasinum).

Vitamins of group B (B1, B6, B12) contribute to the improvement of nerve conduction. With the ineffectiveness of conservative therapy in order to resume full-fledged movements, surgical intervention is indicated. Baker’s cyst requires puncture of the joint in the early stages of the disease and removal of excess synovial fluid. Meniscus damage and cystic formations are successfully treated with surgery.

Complex knee injuries with damage to the articular surfaces and rupture of the ligaments need surgical intervention to restore movement function.

A swelling under the knee behind the back without pain requires the same attention as pain. Delaying treatment can lead to the transition of the disease into a chronic form.

Folk remedies

To reduce the tumor after prescribing a course of drug treatment, alternative methods of medicine can be used for a speedy recovery. The following tools are popular:

  • horse chestnut tincture or ointment;
  • a compress of cabbage leaves or grated potatoes;
  • burdock.

To improve metabolic processes, the ingestion of a decoction of the following herbs is recommended:

Folk remedies should be used only after agreement with the attending physician and after a complex of conservative and surgical methods of therapy.

Possible complications

Delayed assistance is the cause of complications. An unfavorable outcome of the disease may be the addition of:

  • arthrosis with deformation;
  • rupture of a Baker cyst with the penetration of fluid into the calf muscles;
  • stiffness;
  • thrombophlebitis;
  • infection of the knee joint and surrounding tissues.

Adverse consequences can be avoided if you seek qualified help in time and conduct a course of treatment and rehabilitation.

Swelling in the knee without pain requires the mandatory intervention of specialists. Ignoring the symptom leads to the destruction of the articular surface – it will be impossible to restore function in the future.

A tumor under the knee both in front and behind can be a sign of various diseases. To find out why the knee hurts and swells, it will be necessary to conduct diagnostic measures in full. Therapy in the early stages of the process avoids complications.

Tumor under the knee behind

If a person has developed a swelling under the knee that hurts when moving or pressing, and also brings discomfort, do not ignore such symptoms and immediately consult a doctor for advice. A tumor in the popliteal fossa may indicate the development of joint disease, which is important to start treating in a timely manner, because otherwise complications cannot be avoided. Drug therapy, physiotherapy, exercises and folk remedies help get rid of the problem. In advanced cases, surgical removal of education is prescribed.

Causes of swelling and characteristic symptoms

Often, a tumor under the knee does not occur on its own, but is a consequence of progression in the articulation of the pathological process that provokes the formation of swelling behind the patella. The cause of the violation can be traumatic, inflammatory and degenerative. In order for the treatment of the problem to be adequate, it is important to find out why the knee is swollen and sore.

Cyst baker

This is an inflammatory disease in which pathological exudate accumulates in the articular cavity, a cystic capsule is formed around it over time, which is dense and painful to the touch. A cyst occurs on the inside of the leg, just under the knee joint. The formation of a cyst can be triggered by such conditions and pathologies as:

  • arthritis,
  • destruction of cartilage structures,
  • degenerative inflammatory processes,
  • increased physical activity.

A tumor in the back of the knee is characterized by the following symptoms:

  • pain under the knee, which becomes more intense during flexion-extension and while walking,
  • numbness of the legs
  • limb mobility disorder.

Goff’s disease

The main reason for the development of such a pathology is damage to the fatty subcutaneous tissues that are located in front and behind the knee joint. Violation provokes hormonal disruptions in the body, as well as the progression of diseases such as arthrosis and arthritis. The swelling under the knee has a dense structure, with pressure it hurts a lot. As the formation grows, the leg begins to numb, because the tumor compresses the nerve fibers and blood vessels. If the treatment for Goff’s disease is inadequate, the joint muscle, cartilage, and then the bone tissue become inflamed.

Other causes of swelling in the back of the knee

Cyst meniscus

If a person from the outside or inside has swollen under the knee, this may be a symptom of the formation of a cyst on the lateral or medial meniscus. Pathology is accompanied by severe pain in the popliteal region, if timely treatment is not carried out, the swollen joint loses its functionality. In advanced cases, surgical treatment is often prescribed, during which the destroyed structures are removed.

Vascular and nerve fiber disease

Often, pain under the knee occurs due to circulatory disorders and inflammation of the nervous structures of the joint. Common diseases of this nature are:

  • Thrombosis. It is characterized by the formation of a blood clot in a vessel. The person is worried about the heaviness in the legs, the sensitivity of the skin is disturbed in front and behind the limbs.
  • Aneurysm. A tumor forms under the knee, which, when pressed, pulsates and hurts.
  • Inflammation of the nerve. It is characterized by vagueness of pain and numbness of the limb.

Joint fracture

It is often the result of severe trauma, which violates the integrity of the bones and other structures of the joint. In this case, symptoms develop instantly. At the fracture site, hematoma and swelling are formed, the functioning of the limb is partially or completely disrupted. If the fracture is closed and without bias, the treatment is conservative; otherwise, surgery is performed during which the fragments are compared and fixed.

Diagnostic measures

If a person has a swollen and sore knee, while the symptoms gradually worsen, it is necessary to visit a doctor. After the initial examination, the patient is given a direction to an X-ray examination, on which it will be possible to determine the condition of the bones forming the joint. If there is a suspicion of soft fiber damage, an MRI scan is prescribed. After the diagnosis is established, the doctor selects an individual therapy regimen.

How to treat?

Drug and auxiliary methods

If Baker’s cyst is diagnosed, the doctor pumps out the abnormal fluid, and an anti-inflammatory drug is injected into the resulting cavity, after which the limb is immobilized. In Goff’s disease, it is important to reduce the load on the joint, and at the same time take anti-inflammatory and painkillers.

Meniscus cysts are treated with NSAIDs, painkillers are prescribed to eliminate pain. With vascular pathologies, surgical treatment is often prescribed, and if inflammation of the nerve structures is observed, the doctor prescribes non-steroidal anti-inflammatory drugs, painkillers and muscle relaxants. Fractures without displacement are treated by applying a splint or plaster.

Conservative therapy necessarily includes the implementation of exercises that need to be done daily, under the supervision of a doctor. It is also recommended to undergo a course of physiotherapy procedures such as:

If conservative methods have not yielded results, an operation is prescribed during which the pathological structures are removed. After surgery, a rehabilitation period will follow, during which it is important to follow all the doctor’s recommendations.

Treatment with folk remedies

Alternative methods should be used only with the permission of a doctor, otherwise you can provoke a complication and aggravation of the disease. You can try to reduce cysts with the help of such recipes:

  • Compress from raspberry and elderberry leaves. Take a handful of both ingredients and pour all 200 ml of boiling water. Insist 30-40 minutes, then attach warm leaves to the leg, fix them with cling film.
  • Infusion based on a golden mustache. Grind the plant and fill it with a 3-liter jar in half, pour the rest of the volume with boiling water. Means to insist 3 weeks in the refrigerator. Next, the infusion must be filtered, moisten gauze in it and lay to a sore spot. The procedure is recommended to be repeated every day.


To prevent the formation of tumors under the knee and the accumulation of pathological fluid, it is important to treat inflammatory joint diseases in a timely manner. And also it is worth avoiding injuries, bruises and dislocations of the joints. If you suspect the progression of vascular and nervous pathologies, you need to urgently consult a doctor, because these are dangerous disorders that can cost the patient’s life.

And also as a preventive measure, it is recommended to strengthen the knee joint with the help of daily exercises, an active lifestyle and the elimination of bad habits. With characteristic symptoms, it is forbidden to self-medicate, because the sooner you see a doctor, the easier it is to deal with the problem.

Why is swelling under the knee behind

Any person has encountered leg tumors in life. However, chronic edema is a malaise, significantly uncomfortable. Such a nuisance is no longer associated with simply being in the wrong position, causing blockage of blood vessels and a feeling of cottoniness in the legs. If the swelling rises higher – from the fingers to the foot, then to the knee, troubles with blood circulation are recognized as serious, can become symptoms of diseases.

What causes edema

The main cause of a tumor under the knee at the back (or front) is the nature of the person’s movements. We are talking about the load per day on the knee joints. In the specified place four large bones are connected at the same time, providing support to the person. The joint is regularly subjected to a heavy load.

Among the common pathologies are called:

    Injuries to the knee joint, sprain of the ligaments and muscles, rupture of the meniscus (or the accumulation of flu >

In some cases, the knees do not swell due to foot disease. The source hides above – in the spine. For example, nerve vertebral endings are able to pinch or osteochondrosis develop. The main pain sensations arise below due to the fact that the human skeleton is a single large system, difficulties in a certain place can cause pain in the opposite part of the body.


Often people spoil the development of the disease by their own intervention, causing harm to themselves. It’s better to wait for a doctor’s appointment. Before you visit the clinic, you should not take decisive measures to eliminate the tumor behind the knee.

At the reception, the doctor will ask the patient questions regarding lifestyle, heredity. It happens. selected nervous, muscle and bone diseases are transmitted from parents to children. Genetics does not guarantee an inevitable incidence of disease, but the doctor must take into account the hereditary factor during the examination.

The medic will examine the leg in front, behind – in the knee and below. When listing an exhaustive list of symptoms, the diagnosis is made pretty soon, the clinical picture will be clear and distinct. In opposite cases, the treatment will become gentle with a preliminary diagnosis, often becoming ineffective.

Determining the cause of pain in the knee and tumor in the back, radiation is used in the form of diagnostic measures: a common method is x-rays. In equipped medical clinics, there are devices for computed and magnetic resonance imaging. Any radiation has sufficient permeability, demonstrating what is happening under the skin, including processes in the bones.

Remember, the best examination is comprehensive, the mass of procedures and tests means that doctors are trying to choose the best treatment for the patient.


Getting rid of a tumor in the back takes on a different character. A common symptom of a number of treatment systems is early diagnosis associated with successful early treatment. For example, if a Baker cyst is diagnosed in a patient, it is enough to make a puncture, pump out excess synovial fluid from the joint. Then a therapeutic drug is introduced, an elastic bandage tied below is applied to the knee.

The best treatment is arguably considered to be complex: various procedures (including physiological) are combined with taking medications and using folk remedies (if desired). If the patient has knees hurt, a small tumor has formed, an anti-inflammatory drug should be prescribed.

Treatment necessarily includes physical exercises, which are regulated by the attending physician. The leg never stops moving, but therapeutic exercises are aimed at warming up the legs, attempts to return the limbs full motor functionality.

Surgical intervention is performed when the disease is severely neglected and begins to spread throughout the limb. With a visit to a doctor, it is better not to delay.


To stay healthy, it is enough to exercise regularly. Exercise is one side of a health coin. In addition to classes, you need to eat properly so that the substances accumulated after training and processed by the body are not excreted from the body along with feces and urine. More fresh vegetables and fruits, white meat, nuts and cereals should be introduced into the diet. Less fatty and fried is better for a person.

Selected sports activities must take into account your physical condition. If the knee has already been operated on as a result of treatment, bypass the exercises involving active flexion and extension of the joint – for example, a bicycle. The best sport for rehabilitation is swimming, water relaxes a person, helps to better navigate in previously impossible exercises.

Remember, a tumor under the knee can turn out to be a serious disease, leading to complications if you do not prescribe treatment on time.

Causes of edema under the knee in front or behind

The knee joint is an element of the musculoskeletal system that performs many important functions – walking, running, as well as jumping, which provides a person with a full life. The anatomical structure of this joint is fragile and weak – this is caused by the fact that the knee is often subjected to both external (injury) and internal (joint disease) negative effects, as a result of which a swelling forms on its surface.

If swollen under the knee in the back or front, you must consult a doctor, who during the diagnosis will find out why an external defect appeared and tell you how to fix it.

Excessive physical exertion, which is placed on the lower limb and precedes damage to muscle fibers, is considered to be a common cause of a tumor in the knee joint.

Such swelling persists for two days and passes on its own.

In addition to intensive training, pathological causes such as injuries, cystic neoplasms and dangerous diseases can provoke the appearance of edema of the knee joint.


The structure of the knee joint consists of four large bones. The following injuries contribute to the violation of the integrity of the knee:

    sprain and muscle fibers: if the cause of the development of the pathology is damage to the tendons, a tumor forms on the ins >

Another cause of swelling is a deficiency of synovial fluid, which acts as a lubricant and prevents cartilage friction between themselves. If this fluid is produced in a small volume, the knee joint begins to hurt and may swell.

Cyst baker

The pathological reason why the knee swells in the back is a Baker cyst, the formation of which is due to increased production and, subsequently, the accumulation of synovial fluid. The early stage of neoplasm development is characterized by the absence of a pain syndrome: under favorable conditions, the cyst resolves on its own.

If the hollow capsule begins to increase in diameter, the symptoms take on a pronounced character. A tumor under the knee spreads to nearby soft tissues and provokes the development of a hematoma. In this case, there may be numbness of the fingers of the lower extremities, since a large cyst compresses the local nerve endings.

Parameniscal Cyst

A meniscus cyst can provoke a swelling in the back – a neoplasm of a benign nature, filled with mucous secretions and formed in the structure of cartilage. The most susceptible to the development of this type of cysts are professional athletes whose musculoskeletal system is subjected to constant loads.

The tumor of the posterior portion of the knee is aggravated by discomfort and hematomas.

Ignoring the patient for unpleasant symptoms stimulates the process of degenerative bone changes, which increases the likelihood of developing a dangerous concomitant pathology – arthrosis.

Goff’s disease

The knee joint contains fatty bodies in its structure, which provide the depreciation function. If an inflammatory process develops in a joint, fat cells begin to grow rapidly, replacing connective tissue: this phenomenon leads to the formation of a swelling in front of the kneecap.

At the initial stage, Hoff’s disease develops asymptomatically. Further development of the pathology is accompanied by unpleasant symptoms – limited leg movements and painful sensations: the manifestation of such a concomitant disease as arthritis is not ruled out.

Blood vessel problems

Swelling under the knee in front is formed against the background of lymphostasis of the lower extremities – a disease characterized by damage to the lymphatic system. This swelling has a distinctive feature: it is not accompanied by painful sensations.

Varicose veins can provoke the development of swelling. This pathology is characterized by the appearance of blood clots, which, in turn, leads to an upset of local blood flow and a slight swelling under the knee in the back, which resolves independently after two days.

Problems with nerve endings

Edema of the internal region of the knee is a typical symptom of inflammation of the tibial nerve.

At the advanced stage, puffiness is aggravated by painful sensations of an acute nature that extend to the lower leg and foot.

In addition, the patient has limited movement, which is due to weakening of muscle tissue.

Much less often, a kneecap swelling develops against the background of the popliteal vein thrombosis, which is accompanied by symptoms such as pain and general weakness. The danger of such a pathology is that there is a high risk of violating the integrity of the formed thrombus and blocking the pulmonary artery.


It is difficult to determine the cause of the knee joint damage on its own. Patients who have a swollen and sore kneecap are shown to consult a doctor who will diagnose the pathology through the following measures:

  1. Oral interrogation and external examination. With the help of the survey, the doctor determines the accompanying symptoms, examines the patient’s medical records, and determines whether a similar pathology appeared in the next of kin to rule out the involvement of a hereditary factor. Next, the surgeon examines the patella and evaluates its density by palpation.
  2. X-ray of the knee joint is carried out in two projections in order to obtain a reliable clinical picture.
  3. Arthroscopy is an equally important diagnostic procedure, because it allows you to assess the condition of the knee joint from the ins >Arthroscopy

If edema has formed against a background of stagnation in the fluid joint, the doctor performs a puncture to determine the nature of the accumulated secret. In addition to diagnostic, puncture is used for therapeutic purposes, when it is necessary to ensure the outflow of stagnant fluid.


After the diagnosis is completed, the doctor will explain to the patient what to do to relieve swelling and how to prevent dangerous complications. Regardless of the cause of the tumor, treatment is carried out in the traditional way: alternative methods are allowed to use alternative methods.

First aid for injuries

Since mechanical damage to the knee provokes the formation of hematoma and edema, the patient needs first aid, which will stop the inflammatory process. For first aid to be of high quality, you must follow this algorithm:

    Prov >To remove puffiness, apply cold to the damaged area.

The scheme of further treatment is determined by the attending physician, based on the results of the diagnosis.

Traditional therapy

Treatment of edema is based on the integrated use of such drugs:

    anti-inflammatory drugs with analgesic effects – Naklofen, Ibuprofen, Nimid;

Tumor under the knee in the back, how to treat

The origin of pain under the knee is very difficult to determine, because this is the place where a huge number of nerve endings and important structural elements are concentrated. We often do not pay attention to this part of the leg, subjecting it to excessive loads when walking, improper sitting and wearing heavy loads. We press our legs under ourselves, disrupting blood circulation. This can cause not only a swelling under the knee, but also varicose veins.

Therefore, if pain appears behind the knee, this is a sign of inflammation of the back of the kneecap joint. A tumor usually occurs in the popliteal fossa. In order to recognize a disease, it is necessary to know its causes and main symptoms.


Pain and swelling in the back of the knee can be triggered by:

  • inflammation of the joint, muscles and bones;
  • irritation of nerve endings;
  • abnormal functionality of the lymph nodes;
  • squeezing blood vessels.

It is very difficult for an inexperienced eye to determine the true cause of the tumor. The formation of swelling in the back of the knee can be caused by osteochondrosis or impairment of the neurovascular bundle. If the reason is this, then the pain will be given to the patella area. The problem can also be caused by pathological processes. Without an instrumental examination, it is impossible to recognize the etiology.

Cyst baker

This disease most often provokes the formation of a tumor behind the knee. It occurs in people after 40 years and is the result of inflammation. The synovitis membrane produces fluid, which, with pathological changes, can accumulate an excessive amount of it. In the back, a kind of capsule with a substance is formed, which has a dense structure and is painful to the touch. If the cyst is squeezed a little, it may slightly decrease. The same thing happens when bending.

Tumor under the knee

Diagnosis of Baker’s cyst is necessary only on extended limbs.


Pain behind the knee and Baker’s cyst provoke:

  1. arthritis;
  2. cartilage tissue injury;
  3. professional sports with strong physical exertion;
  4. inflammatory processes.


Recognizing a tumor behind the knee is quite simple. There are characteristic signs:

  • pain during bending;
  • a clear swelling is visually visible, which over time can pass to the front of the knee;
  • the leg goes numb;
  • tingling appears in the foot of a sore leg;
  • it becomes difficult to move the leg;
  • fingers begin to bend only with additional effort, since nerve fibers are compressed under the knee;
  • palpation pain.


With an unopened cyst, it is enough to conduct a conservative treatment:

  1. first, the nature of the disease is determined, for which, on an outpatient basis, a substance is punctured behind the knee joint;
  2. then they pump out excess fluid and inject anti-inflammatory drugs;
  3. after that, an elastic bandage is applied, which must be worn for several weeks so that the situation does not happen again;
  4. for some time the load on the knee is excluded.

Why is a cyst dangerous?

With the growth of a cyst, it can provoke compression of blood vessels and nerve endings. In this case, blood circulation and motor activity are severely impaired. Impressions of legs can be created. Toes begin to grow numb more and more, become unpleasantly cold and pain when walking. When blood vessels are squeezed, blood clots appear on the lower leg. With such accumulations, thrombophlebitis may develop.

If left untreated, the cyst can burst over time and cause inflammation of the lower leg.

Cyst meniscus

This type of tumor behind the knee is less common. It occurs against the background of inflammation of the horn of the meniscus. Traced severe pain and tingling. This is a rather dangerous disease, found in athletes and people working in heavy industrial production. If you start a cyst, there may be a chance of an operation.

With the conservative method, the following are used:

  1. painkillers;
  2. drugs that relieve inflammation, which are sometimes injected into the knee;
  3. decrease in physical activity.

During the operation, all affected areas of the joint and meniscus are removed.

Tumor under the knee

The fossa located under the knee can also become inflamed, causing pain in the back. As a rule, such inflammation is infectious. Viruses penetrate through open wounds on the foot and through the knee. Harmful microorganisms move along the lymph, getting into the popliteal space, where they begin to multiply. There is an accumulation of lymphoid tissue and swelling of the surrounding surface. Outwardly, it looks like a tumor.

The fossa located under the knee can also become inflamed, causing pain in the back. As a rule, such inflammation is infectious. Viruses penetrate through open wounds on the foot and through the knee. Harmful microorganisms move along the lymph, getting into the popliteal space, where they begin to multiply. There is an accumulation of lymphoid tissue and swelling of the surrounding surface. Outwardly, it looks like a tumor.


  1. pain in the back of the knee;
  2. temperature increase;
  3. accumulation of pus in the popliteal fossa;
  4. with complications, an abscess may develop;
  5. inflamed regional lymph nodes;
  6. redness in the knee joint is rare.


People in rare cases treat the initial stage of the disease and start it before the formation of an abscess. This threatens with serious complications, therefore, in this situation, a mandatory operation is indicated. In the hospital, an abscess is opened, and drainage is placed to drain the infected fluid.

Forms of Aortic Aneurysm

Inflammation of blood vessels and nerve endings

The cause of pain behind the knee can be prolonged inflammation. Classification of tumor formations:

  1. inflammation of the nerve. The tibial nerve is located in the lower part of the popliteal fossa. With severe frostbite or frequent squatting, a tumor occurs, which can eventually spread to the foot. The main symptoms are the occurrence of sharp pains, changes in tendon reflexes, muscle tone. Surgery is used to correct the problem;
  2. arterial aneurysm. It is characterized by stratification of the walls of the vessel. A dangerous disease that can provoke artery rupture at any second. If in the popliteal fossa you can feel a pulsating seal – a sign of aneurysm. Treatment is carried out under the supervision of a doctor with the obligatory operation;
  3. vein thrombosis. Blockage of the veins in the popliteal fossa is quite rare, but causes acute pain. It is quite difficult to recognize the disease. The swelling is visible only slightly, there is no redness and impaired motor activity. The diagnosis is usually made after the development of complications. Thrombosis is a deadly pathology that requires immediate treatment. Therefore, in the event of unexplained pain in the back of the knees, it is necessary to consult a doctor and undergo ultrasound and dopplerography. If blood clots began to spread, then surgery will be required.

Swelling and pulling pain under the knee behind: treatment

Diseases of the musculoskeletal system are not the only source of pain in the limbs. Often pathology causes a disruption of the nerves and blood vessels, as well as inflammatory changes in the soft tissues.

It hurts under the knee – with such a complaint a large number of patients turn to doctors. It is necessary to understand the main causes of the onset of symptoms.

Causes of Pain

To establish a diagnosis, the doctor will conduct a comprehensive survey of the patient. The specialist will clarify the following points:

  • Localization of symptoms: pain under the front knee causes completely different causes than the symptoms on the back of the leg.
  • The nature of the sensations: the pain under the knee can be sharp or pulling, bursting or pressing.
  • Additional signs: did the knee swell, did the body temperature increase, did other additional symptoms appear?
  • Is there a connection with physical activity? Pain under the knee often occurs after intense training.

If the leg under the knee hurts, the causes of the pathology are rarely associated with joint damage. The pathology of the joints is often manifested by symptoms in the region of the joint space itself.

Causes that can cause pain under the knee:

  1. Damage to tendons and ligaments.
  2. Muscle pain.
  3. Violation of the functioning of blood vessels.
  4. Cyst Baker.
  5. Other diseases of the knee joint.

It is worthwhile to separately analyze the causes of pain under the knee, since they all have features of diagnosis and treatment.

Tendon injuries

In the vast majority of cases, pain under the knee along the anterior surface of the lower leg is associated with tendonitis – inflammation of the tendons.

In this anatomical region there is a large connective tissue structure – the patellar ligament. It is she who is often affected by physical exertion and injuries.

Microdamages occur in the ligaments – tendinosis. They may not be seen by patients for a long time. With strong exposure or frequent consecutive microtrauma in the ligament, inflammation develops – tendonitis, it usually gives vivid clinical symptoms.

Symptoms and Diagnosis

What are the manifestations of tendon damage? The following symptoms can be listed:

If under the kneecap pulls for several months, and the use of drugs does not bring a pronounced effect, you should consult a doctor.

Diagnosis of tendonitis is the exclusion of joint diseases. X-ray and MRI will not show organic lesions of the knee joint. Ultrasound of the affected area also helps to make a diagnosis.


Therapy of tendonitis includes medication and non-medication. The first method of treatment involves the use of such drugs:

  • Nonsteroidal anti-inflammatory drugs.
  • Annoying ointments.
  • Analgesics.
  • Rarely hormone injections.

The basis of treatment is non-pharmacological measures:

  1. Physiotherapy exercises 20-30 minutes a day.
  2. Exclusion of excessive load on the tendon.
  3. Decreased body weight.
  4. Physiotherapy and massage.

Surgical treatment is indicated only for complications or complete rupture of the tendon. Usually, pathology is treated conservatively.

Muscle pain

Back pain under the knee is often associated with overstrain of muscle fibers after intense exertion. The pain occurs after training, as well as in athletes with increasing complexity and intensity of classes.

Symptoms and Diagnosis

Everyone experienced a characteristic muscle pain. It is manifested by aching sensations due to the accumulation of lactic acid in the tissues. This metabolic product is formed when there is a lack of oxygen in the muscle.

Pain under the knee in this case is not accompanied by other unpleasant symptoms, it occurs during flexion and extension, localized behind and below the popliteal fossa.

Severe pain in this case is not characteristic, when it occurs, it is necessary to exclude other diseases. If the knee is swollen, this also usually rules out the muscular causes of the symptoms.

Diagnosis is the exclusion of other pathological conditions.


It is not necessary to treat pain of a muscle nature with drugs. It is necessary to dose physical activity, gradually increase their strength so that the muscles gradually get used and exercise.

Vascular pathology

Pain below the joint, as well as swelling under the knee, occur with varicose veins of the lower extremities. This disease primarily involves the area of ​​the leg below the knee – the lower leg and foot.

Why does varicose veins occur? Pathology is associated with the inability of the vascular wall to maintain its tone. The vein expands, the tissues around swell, there is a sensation of pain.

  • Female.
  • Elderly age.
  • Overweight.
  • Private loads.
  • Work associated with prolonged standing.
  • Acceptance of certain medications.
  • Injuries
  • Pregnancy.

Symptoms and Diagnosis

Pain below the knee associated with vascular pathology has characteristic features. These include the following symptoms:

  1. The pain below the knee increases in the evening, in the lower leg stretches when walking.
  2. The affected vein is dilated, visible through the skin.
  3. Around her is a tumor.
  4. Trophic lesions appear on the skin: ulcers and cracks.
  5. The disease in the later stages leads to lameness when walking.

For diagnosis, ultrasound of the affected veins is used to measure blood flow velocity, vein patency tests, radiopaque methods.


If pain below the knee is associated with pathology of the venous bed, medications and a surgical approach can be used.

When conservative treatment is used:

  1. Elastic knitwear or bandages on the lower limbs.
  2. Microcirculation enhancing drugs.
  3. Phlebotonics.
  4. Antiplatelet agents.

An intermediate option between surgical and conservative treatment is sclerotherapy – the introduction of a substance into the lumen of the vein, which causes the closure of its lumen. The outflow of venous blood in this case occurs through the deep veins of the leg.

Surgical treatment methods:

  1. Phlebectomy – removal of the affected vein.
  2. Laser coagulation.
  3. Radio frequency coagulation.

Indications for treatment are determined by the doctor of the surgical department after a set of diagnostic measures.

Cyst baker

If pain and swelling occur on the foot below the knee along its posterior surface, the cyst of the popliteal fossa may be the cause. The formation is an accumulation of fluid surrounded by an elastic capsule.

Why does a cyst occur? The reasons are as follows:

Quite often, it is not possible to identify the cause of the appearance of the cyst.

Symptoms and Diagnosis

What are the symptoms of a Baker cyst? The characteristic clinical picture:

  1. Pain when bending and walking below the joint on the back surface.
  2. Feeling of pressure, discomfort when walking.
  3. Limitation of range of motion, the cyst “pulls”, does not allow to maximize bend and bend the knee.
  4. Swelling, swelling in the popliteal fossa.
  5. With concomitant synovitis – redness of the skin in the popliteal fossa, rarely an increase in temperature.

If there is a characteristic subcutaneous tumor formation below the knee, the diagnosis can be made without further diagnosis. Otherwise, it is necessary to conduct some research:

  • X-ray of the knee.
  • Magnetic resonance imaging.
  • Ultrasound diagnostics.
  • Puncture of a cyst with a study of fluid.

After carrying out the above procedures, the diagnosis becomes obvious.


After the diagnosis is established, the doctor will decide on the need for surgery. Surgical treatment of cysts is most effective. It consists in the excision of education. Rehabilitation takes several days, after which the patient can engage in the usual loads.

Conservative methods are less commonly used. They resort to them if the patient has a concomitant pathology, a small cyst, a patient’s unwillingness to undergo surgical treatment.

As conservative drugs are used:

  1. Anti-inflammatory ointments and pills.
  2. The introduction of solutions with hormones into the cavity of the cyst.
  3. Treatment of arthrosis and arthritis of the knee joints.
  4. Physiotherapy.
  5. Compresses

Conservative treatment is considered ineffective in the following manifestations of the disease:

  • Limitation of range of motion, load when walking.
  • A large volume of cysts.
  • Nerve compression in the popliteal region.
  • Repeated episodes of inflammation are synovitis.

Other reasons

The most common causes of pain under the knee joint have been described above. But the appearance of such symptoms may be associated with other diseases:

  1. Deforming arthrosis. The disease can lead to reflex muscle spasm, which occurs in the area below the knee joint.
  2. Radicular syndrome in osteochondrosis. Pain radiates along the back of the leg, descending below the knee.
  3. Inflammation of the tibial nerve due to infection, compression of the tumor, trauma and other causes.
  4. Lymphadenitis is an inflammation of the popliteal lymph nodes.
  5. Menisciopathy – rarely pain with meniscus damage does not occur in the joint space, but below it.
  6. Osteoporosis and associated fractures. A decrease in bone mineral density does not manifest itself, but may lead to an increased risk of bone fractures.

Diagnosing is not always easy. Even an experienced doctor should conduct instrumental studies to make the correct diagnosis.

In our country, the treatment of pain with folk remedies is very common. It should be said that any intervention without consulting a specialist is likely to lead to complications. It is not recommended to use alternative recipes for the unexplained cause of discomfort.

Shishkevich Vladimir

Shishkevich Vladimir, orthopedic and traumatologist, project editor-in-chief ExpertNews. It specializes in the treatment of diseases in orthopedic, traumatological, vertebrological profiles