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(PAES) Popliteal artery entrapment syndrome : Causes, Types, Symptoms, Diagnosis ,Treatment , Risk factors , Complications , Prevention

What is (PAES) Popliteal Artery eEntrapment Syndrome?

Popliteal artery entrapment syndrome (PAES) is an unprecedented vascular sickness that influences the legs of some younger athletes. When you have this syndrome, the muscle behind your knee compresses your popliteal artery — the principal artery that runs out of your thigh for your calf.

The attachment of your gastrocnemius muscle on your thigh bone causes compression. When your gastrocnemius muscle contracts throughout foot plantar flexion (pushing down), your muscle compresses your artery.

During exercising, repetitive compression leads to spasms of your artery. This reduces blood waft. The reduced blood flow leads to a buildup of lactic acid and carbon dioxide in your muscles and nerves, which produces heaviness, achiness, tiredness and every so often numbness for your calf and foot.

Symptoms usually improve 3 to 5 mins after stopping the exercise. Without remedy, through the years, the spasm has a tendency to occur faster and last longer. Symptoms arise after a shorter distance and it takes longer to recover.

The popliteal artery is the dominant supply of blood delivered to the leg under the knee. Due to an strange direction of the popliteal artery and the calf muscle group, the artery can be compressed and reduce blood glide. The outcome of decreased go with the flow from calf contraction is on the spot and ends in cramping and calf ache during exercise.

As a secondary effect, in the long term, repetitive trauma to the artery in its extraordinary route can physically harm the arterial wall and cause a revolutionary narrowing called a stenosis. In the most intense cases, everlasting harm to the muscle tissue and nerves of the leg is feasible.

What is (PAES) Popliteal Artery eEntrapment Syndrome


Explanation of medical terms and concept (PAES) Popliteal artery entrapment syndrome

(PAES) Popliteal artery entrapment syndrome is a painful condition that occurs when the popliteal artery also known as the posterior tibial artery (PTA) is pinched in the knee It most often affects individuals who are middle-aged or older and may be associated with obesity diabetes and varicose veins The PTA supplies blood to the lower leg and foot so if it is compressed on its way to the foot symptoms will include pain numbness and weakness along the back of the leg and possibly discoloration of the foot due to decreased blood flow Individuals with PAES may also experience swelling and/or warmth of the leg or foot.

Popliteal artery entrapment syndrome (PAES) is an unusual circumstance wherein an abnormally located or enlarged calf muscle presses on the main artery at the back of the knee (popliteal artery). The artery will become trapped, making it tougher for blood to flow to the decreased leg and foot.

Popliteal artery entrapment syndrome is most commonplace among athletes.

Popliteal artery entrapment syndrome (PAES) is an uncommon reason for lower extremity exertional claudication because of outside compression of vascular systems in the popliteal fossa. A developmental anomaly because of an aberrant courting of the artery with the encompassing myofascial systems contributes to the vascular compromise. PAES is offered in younger, athletic patients without atherosclerotic danger elements. Typical presentation of unilateral or bilateral, intermittent claudication within the feet and calves particularly after exercising and relieved by means of relaxation in a younger man or woman need to set off a similar assessment. Early prognosis and intervention is essential for stopping thromboembolic difficulty and in worst instances limb loss. Initial checks with Ankle Brachial indices or Doppler ultrasound with provocative maneuvers will prompt extra definitive cross sectional imaging research. CTA or MRA also with provocative maneuvers has a high sensitivity and specificity and will clinch the diagnosis. There are six subtypes based on the relationship of the vascular shape with surrounding myofascial structures. CTA and MRA can represent the subtypes and guide surgical making plans. Catheter directed thrombolysis can be tried adjunctively to lessen surgical thrombectomy or remedy distal emboli; but, myotendinous decompression without or with vascular restore is the definitive remedy. Long term surgical consequences are first-rate when the distal circulation is preserved.

Types of (PAES) Popliteal artery entrapment syndrome

There are six different types of PAES:

  • Type 1 — happens because of an abnormal course of the popliteal artery.

  • Type 2 — happens because of an abnormal position of a nearby muscle.

  • Type 3 — happens because of an accessory slip of a nearby muscle and fibrous bands of tissue.

  • Type 4 — happens when the popliteal artery passes underneath the popliteus muscle.

  • Type 5 — includes compression of the popliteal artery and the popliteal vein.

  • Type 6 — includes other variations.


Types of (PAES)


Symptoms (PAES) Popliteal artery entrapment syndrome

The feature symptom of PAES is pain or cramping inside the calf that is delivered on by means of exercise. In the received form, the calf muscular tissues can press on the close-by popliteal vein and nerve in addition to the artery, so discoloration, swelling, and numbness may also be a gift. PAES does now not commonly result in pain within the legs at relaxation. In truth, relaxation typically resolves the signs. Importantly, the pain or cramping commonly influences more youthful those who are otherwise healthy; it is hardly ever the reason of exertional calf pain in patients over 40 years of age.The foremost symptom of popliteal artery entrapment syndrome (PAES) is ache or cramping within the again of the lower leg (the calf) that occurs during workout and goes away with relaxation. Other symptoms and signs and symptoms can also consist of:

  • Cold feet after exercise

  • Tingling or burning in your calf (paresthesia)

  • Numbness in the calf area

If the close by vein (popliteal vein) also will become trapped via the calf muscle, you could have:

  • Heavy feeling in the leg

  • Lower leg cramping at night

  • Swelling in the calf area

  • Changes in skin color around the calf muscle

  • Blood clots in the lower leg (deep vein thrombosis)

Symptoms commonly have an effect on younger, otherwise healthful people below age 40.

When to see a doctor

See your doctor if you have any sort of leg ache, specifically when you have calf or foot cramping all through a hobby that gets higher with relaxation.

Causes (PAES) Popliteal artery entrapment syndrome

PAES is maximum generally due to compression of the popliteal artery by the medial head of the gastrocnemius muscle, which is the internal portion of the calf muscle that inserts at the extent of the knee (Figure 1). When the gastrocnemius muscle is careworn, which includes at some point of exercising, it causes a reduction in the blood drift through the popliteal artery to the lower leg.

Popliteal artery entrapment syndrome (PAES) is resulting from a bizarre calf muscle, usually the gastrocnemius muscle.

The circumstance may occur from delivery (congenital) or broaden later in lifestyles (received). In the congenital shape, the calf muscle or nearby artery is abnormally placed even as the infant grows in the mom's womb. People with the acquired shape of PAES have a calf muscle that is bigger than normal (enlarged).

The strange calf muscle presses on the primary artery in the back of the knee (popliteal artery), decreasing blood flow to the lower leg. The lack of blood drift results in ache and cramping within the lower back of the lower leg at some stage in instances of pastime.

Risk factors (PAES) Popliteal artery entrapment syndrome

PAES can both be congenital (from beginning) or obtained (develops later in lifestyles). In the congenital shape, one of the calf muscle groups, maximum generally the gastrocnemius muscle, takes an peculiar function for the duration of fetal improvement, which ends up in an peculiar route of the popliteal artery. In the obtained shape, expansion of one of the calf muscle groups results in compression of the popliteal artery.

Regardless of the purpose, the symptoms of PAES normally no longer arise until human beings are in their late teens or 20s. An ordinary affected person is a younger athlete without any of the conventional atherosclerotic danger elements (e.G. No smoking or diabetes). People who do sports that promote fast muscle boom, along with weight resistance education or excessive-depth circuit training, are at the very best threat. Although PAES can affect both women and men, 83% of instances occur in guys,2 likely due to the rapid muscle increase that takes place throughout puberty in this group.Popliteal artery entrapment syndrome (PAES) is uncommon. The following things book your hazard of the situation.

  • Younger age. The condition is most often seen in those who are in their late young adults or 20s. It's rarely identified in the ones over age forty.

  • Being male.PAES can arise in absolutely everyone, however it's a great deal extra not unusual in young guys.

  • Strenuous athletic activity. Runners, bicyclists, and athletes who attempt to construct muscle rapidly with weight schooling workouts or excessive-depth circuit training are at the highest chance.

Complications

Long-time period stress on the popliteal artery can cause the artery to slender (stenosis), inflicting pain and cramping with simply slight hobbies, which include taking walks.

In severe cases or whilst undiagnosed, the nerves and muscle groups in the leg can turn out to be broken. Blood clots can also occur in the lower leg (deep vein thrombosis). Older athletes with symptoms and symptoms of popliteal artery entrapment syndrome need to be checked for popliteal aneurysm, which is common in older men.

Diagnosis (PAES) Popliteal artery entrapment syndrome

The vascular surgical procedure group at Johns Hopkins has knowledge inside the analysis and control of PAES. In many cases, a noninvasive ultrasound can secure the analysis, with additional imaging performed in some instances. We strongly advise for magnetic resonance angiogram and MRI generation, if wanted, as this avoids radiation publicity for younger sufferers.

Your health practitioner will carefully have a look at you and ask questions about your signs and fitness records. However, due to the fact most people with popliteal artery entrapment syndrome (PAES) are young and usually healthy, diagnosing the condition can once in a while be challenging. The findings from a physical examination generally are normal.

Your doctor will rule out other reasons for leg ache, consisting of muscle strains, pressure fractures, persistent exertional compartment syndrome and peripheral artery disorder, which results from clogged arteries.

Tests used to rule out different situations and diagnose PAES encompass the subsequent:

  • Ankle-brachial index (ABI) measurement Is typically the first test accomplished to diagnose PAES. Blood stress measurements are taken in your legs and arms in the course of and after strolling on a treadmill. The ABI is determined by dividing ankle pressure through arm pressure. The blood pressure to your legs ought to be higher than that of your hands. But if you have PAES, your ankle strain drops during exercise.

  • Duplex ultrasound of the calf Uses excessive-frequency sound waves to decide how rapid blood is flowing through the leg arteries. This noninvasive test may be performed earlier than or after workout or while you flex your foot up and down, which places your calf muscle to work.

  • Magnetic resonance angiography (MRA) Shows the calf muscle this is trapping the artery. It can also reveal how much of the popliteal artery is narrowed. You may be requested to flex your foot or press it against a board during this test. Doing so facilitates your doctor deciding how blood is flowing in your lower leg.

  • CT angiography Additionally indicates which leg muscle is causing the artery entrapment. As with MRA, you will be requested to change the location of your foot all through this take a look at.

  • Catheter-based angiography Permits your doctor to see how blood is flowing to and from the lower leg in real time. It's performed if the analysis remains uncertain after other, much less invasive imaging tests.

Treatment (PAES) Popliteal artery entrapment syndrome

Your healthcare issuer can do surgical treatment to dispose of a small portion of your gastrocnemius and popliteus muscle. This eliminates the compression of your artery and lets normal blood glide in your leg.

The popliteal artery entrapment syndrome surgery takes about an hour. You’ll be asleep underneath widespread anesthesia during the technique.

In greater instances of anatomic popliteal entrapment whilst the popliteal artery is damaged and blocked, your surgeon may also need to clean out the artery and patch it or carry out a pass across the blocked phase of the artery to restore blood flow.

Surgery is the preferred treatment for popliteal artery entrapment syndrome as it gives exceptional results for the majority. More than ninety% of people who have the surgical operation have first rate improvement in their signs and symptoms later on.

The best non-surgical remedy for the functional kind of PAES uses injections of Botulinum toxin A. With CT or ultrasound guidance, your provider injects Botox® or Dysport® into the muscle that’s inflicting the compression. This quickly paralyzes the muscle that’s inflicting symptoms in hopes that the muscle shrinks completely.

However, this effect best lasts for 3 to 6 months. If the muscle doesn’t get smaller, the signs will manifest again. This has been a hit in much less than 60% of humans a 12 months after remedy.

Surgery is the simplest manner to accurate the strange calf muscle and free the trapped artery. Your physician will in all likelihood suggest surgical operation in case your signs and symptoms significantly affect your normal or athletic sports.

During surgical operation, the doctor makes an incision on the inner calf just beneath the knee, or inside the again of the knee, to launch the abnormal calf muscle and supply the artery more room. This will save you the calf muscle from being urgent at the artery inside the destiny. Surgery is accomplished even as you're underneath well known anesthesia. The process takes about an hour. Typically, you'll need to stay inside the health center for at some point.

If you have had the condition for a long term, you could need an artery skip surgical procedure. Bypass surgery is commonly achieved handiest on the ones who've excessive narrowing of the artery (stenosis) because of lengthy-term popliteal artery entrapment syndrome.

Surgery to release the calf muscle and artery usually does not have an effect on leg characteristics. When the situation is identified and treated early, a complete healing is expected, and your symptoms must disappear.

Preparing for your appointment

If you suspect you may have popliteal artery entrapment syndrome, it is essential that you make an appointment with your doctor. If popliteal artery entrapment syndrome is observed early, your remedy may be less complicated and extra powerful.

Because appointments can be short, and due to the fact there is frequently lots to speak about, it's an awesome concept to be prepared for your appointment. Here's some facts to help you get geared up on your appointment and understand what to anticipate out of your medical doctor.

What you can do

  • Be aware of any pre-appointment restrictions. At the time you're making the appointment, be sure to invite if there may be whatever you need to do earlier, such as not ingesting or ingesting anything for some hours. You may also need to try this in case your medical doctor orders blood tests.

  • Write down any symptoms you're having, Along with any that can appear unrelated to popliteal artery entrapment syndrome.

  • Write down key personal information, Inclusive of any family records of heart ailment, stroke, high blood strain or blood clots, and any primary stresses or latest existence modifications.

  • Make a list of all medications, vitamins or supplements that you're taking.

  • Take a family member or friend along, If feasible. Sometimes it could be tough to apprehend and keep in mind all the records received at some stage in an appointment. The person who is going with you can never forget something that you neglected or forgot.

  • Write down questions to ask your doctor.

Your time with your health practitioner is restrained, so preparing a list of questions will assist you're making the maximum of a while collectively. List your questions from maximum critical to least vital, in case time runs out. For popliteal artery entrapment syndrome, some primary inquiries to ask your physician encompass:

  • What is likely causing my symptoms or condition?

  • What are other possible causes for my symptoms or condition?

  • What kinds of tests will I need?

  • What's the most appropriate treatment?

  • What's an appropriate level of physical activity?

  • What are the alternatives to the primary approach that you're suggesting?

  • I have other health conditions. How can I best manage them together?

  • Are there any restrictions that I need to follow?

  • Are there any brochures or other printed material that I can take home with me? What websites do you recommend visiting?

Don't hesitate to ask your doctor extra questions throughout your appointment.

What to expect from your doctor

Your medical doctor is likely to ask you a number of questions. Being equipped to answer them might also keep time to head over any factors you need to spend more time on. Your health practitioner might also ask:

  • When did you first start having symptoms?

  • Do you always have symptoms or do they come and go?

  • How severe are your symptoms?

  • What, if anything, seems to make your symptoms better?

  • What, if anything, makes your symptoms worse?

General summary

How long is PAES surgery?

PAES surgery is typically performed using general anesthesia which may require a day or two of recovery time Surgery typically lasts one to two hours and will involve removing the affected cartilage and a portion of the bone that attaches to it A prosthesis made of silicone will then be inserted into the knee.

What operations are performed for occlusion of the popliteal artery?

Arterial occlusion is the blockage of an artery by a thrombus embolus or other foreign material It is a common complication of peripheral vascular disease that leads to chronic lower limb ischemia and often manifests as rest pain This can result in significant tissue damage if not properly treated.

What is popliteal occlusion?

Popliteal occlusion is a condition characterized by pain or weakness in the back of the knee It is also referred to as Parson's syndrome or tight-knee syndrome The condition can be caused by a variety of factors including poor circulation improper alignment injury and swelling In most cases the pain subsides on its own within two weeks when treated with rest and over-the-counter medications.

Is a popliteal aneurysm an emergency?

The answer is yes because an untreated popliteal aneurysm can burst and can cause loss of blood circulation to the lower leg. The treatment for a ruptured aneurysm is surgery so this condition should be treated as soon as possible.

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(PAES) Popliteal artery entrapment syndrome : Causes, Types, Symptoms, Diagnosis ,Treatment , Risk factors  , Complications , Prevention

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