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Blog / Articles / Knee / Knee Arthritis

A New Knee Arthritis Treatment Alternative: Arterial Embolization

Howard J. Luks, MD Updated July 12, 2018

knee replacement

Osteoarthritis of the knee can be a very disabling condition. Common treatments for arthritis of the knee includes anti-inflammatory medications, physical therapy, braces and injections.  Those treatments are often effective for many years before you need to consider knee replacement surgery. For some of you , your knee pain does not respond to common treatments. That is when many of you will seek alternative treatments for your knee pain to avoid surgery.

Why some people have more pain than others isn’t always clear.   The pain of arthritis can come from the bone itself, or from the soft tissue lining of the knee joint.  That lining is the synovium. When the synovium becomes inflamed, your knee pain can be severe, and more difficult to treat.

You know the story… getting up from a chair, stiffness in the morning, trying not to have to go up or downstairs too often.  Osteoarthritis of the knee is painful because of inflammation. Over the last 5 years a new treatment for knee arthritis pain has emerged. This new treatment for arthritic knee pain is capable of decreasing your pain for 6 or more years.  That treatment is a selective arterial embolization.  It sounds scary… scroll down and I’ll explain in more detail.

knee arthritis treatment
Copyright: Medical Media Group.

Synovitis and Knee Osteoarthritis Pain

knee arthritis pain
Synovitis of the knee occurs when the inside of the knee becomes inflamed. The tissue which lines the knee becomes inflamed, red, and angry appearing.  The synovium, or the lining of the knee normally produces a little bit of fluid for lubricating the knee joint. When the synovium becomes inflamed it will produce a lot more fluid.  That’s often why your knee will be swollen.  If the fluid exits the back of your knee you will develop a Baker’s Cyst as well.

As you will see in the picture below, an increase in blood flow around the knee is causing the inflammation.  This is why many of you might not feel relief of pain for very long after an injection into the knee.  That’s because the excess blood flow is bringing more blood to the painful part of the knee.  That often leads to more nerve growth as well. The blood feeds the synovium.  If the synovium receives more blood then it can grow. As the synovium grows it becomes more irritated and causes more severe knee pain.

Arterial Embolization For Knee Arthritis Pain

Arterial embolization as an alternative treatment for knee osteoarthritis is a process where a Radiologist will inject a dye so they can see your blood vessels. Once the Radiologist sees the area where too many blood vessels have formed they will inject medication or microscopic spheres. Those little spheres will block the tiny abnormal arteries which are feeding your synovium and causing your pain.  As demonstrated in this 2015 paper, selective geniculate artery embolization led to significant and long term relief of knee pain.  In a recent (2017) follow up article, the authors noted that pain relief was sustained for more than 3 years.

arterial embolization for knee arthritis pain

The image above shows a knee arterial embolization procedure.  On the image labeled “B” you see many blood vessels in a small region along the inner side of the knee.  The bones are barely visible due to “digital” subtraction.  That area where the blood vessels are concentrated is often a very tender spot around the inner side of the knee in someone with severe arthritic knee pain.  The picture on the left labeled ” A” shows the results after a selective geniculate artery embolization.

inner knee pain due to arthritis

 

The picture on the right demonstrates the region of the knee which would correspond to the area of pain I showed in the images of the embolization procedure.  Arthritis can affect many other areas within the knee.  This was just one example where the patient had pain on the inner portion of the knee due to arthritis in that area.  If your arthritis affects other areas then a different artery would be treated.

Recovery From Arterial Embolization

The patients who received a selective geniculate artery embolization for chronic knee pain due to osteoarthritis appear to have relief of pain almost immediately. For many that pain relief appears to last at least 6 years in some published reports.  Of course your results might vary, but for now it appears that this is a procedure capable of helping restore your quality of life, improving your function and enables you to avoid knee replacement surgery.  A selective geniculate artery embolization may be a great alternative treatment for pain from osteoarthritis of the knee.

Am I A Candidate For Embolization For My Knee Arthritis Pain?

Not everyone with arthritis knee pain will qualify for this procedure.  Your knee X-rays should show that you suffer from mild to moderate osteoarthritis. This procedure is not likely to work well for those of you who have “bone on bone” or severe arthritis.  This procedure should also be limited to those who have already tried other treatments such as medications, physical therapy, a compression sleeve and weight loss.  A selective arterial embolization is a relatively low risk procedure, but that doesn’t mean that it should be the first treatment you try for your arthritic knee pain.

 

Images Attribution:

Okuno, Yuji & Mohamed Korchi, Amine & Shinjo, Takuma & Kato, Shojiro. (2014). Transcatheter Arterial Embolization as a Treatment for Medial Knee Pain in Patients with Mild to Moderate Osteoarthritis. Cardiovascular and interventional radiology. 38. . 10.1007/s00270-014-0944-8.

 

Dislcaimer

Categories: Knee Arthritis

Disclaimer:  this information is for your education and should not be considered medical advice regarding diagnosis or treatment recommendations. Some links on this page may be affiliate links. Read the full disclaimer.

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Howard J. Luks, MD

Howard J. Luks, MD is an orthopedic surgeon & sports medicine specialist. An expert in shoulder, knee, and other sports injuries, he is widely known as one of the country’s best orthopedic surgeons.

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Comments

  1. Rose says

    July 23, 2017 at 10:31 am

    My mom suffers her knee pain she tries injection ,medication , Phsio therapy doesn’t help at all can I try this medication what it called exactly so I can recommend to her Docter she is suffering a lot please help ???!

    • Howard J. Luks, MD says

      July 24, 2017 at 6:42 am

      Rose
      My own institution will be offering this procedure over the next few months. We are currently setting up the protocols, and obtaining all necessary approvals, etc. During my research online … I researched the keyword “geniculate artery embolization” — I saw that there are a handful of centers in the US currently considering this too. I will update this post when we are able to perform this… in the meantime try searching Google for other centers too.

      Good luck.

  2. Helen says

    July 24, 2017 at 5:09 am

    This sounds interesting
    ,,,pain in my knee all the time and osteotomy was done to my knee two years ago to realign my left leg, but I was still suffering from knee pains so the metal from the osteotomg was removed after one year and had microfructure done at the same time because of my cartilage has a damages, but still no much improvement so I start doing PRP injection, I have almost lose all my hopes on my self I am 33 years old, my activity is limited sadly.
    Any guidance will be appreciated

    • Howard J. Luks, MD says

      July 24, 2017 at 6:35 am

      Hi Helen …
      My own institution will be offering this procedure over the next few months. We are currently setting up the protocols, and obtaining all necessary approvals, etc. During my research online … I researched the keyword “geniculate artery embolization” i saw that there are a handful of centers in the US currently considering this too. I will update this post when we are able to perform this… in the meantime try searching Google for other centers too.

      Good luck.

  3. Debby Kelly says

    August 10, 2017 at 12:25 am

    Dear Dr. Lukas, I had an MRI which shows an medial medical tear with grade 1 partial thickness medial collateral ligament tear. Significant articular cartilage loss from the medial compartment and to a lesser degree in the patellofemoral joint.
    I was told that my arthritis caused the tear and knee replacement is the only remedy. I also have a bakers cyst (popliteal cyst). If I were to have the fluid removed, It would fill up again very soon afterward. If I were to have the tear fixed, It also would tear again because of the arthritis.
    I would like to know if you agree.
    Thank you. Debby

    • Howard J. Luks, MD says

      August 10, 2017 at 7:05 am

      It’s true that a popliteal cyst will often re-accumulate fluid following an aspiration. When the pain of a degenerative knees reaches a point where your quality of life is poor, and other treatments (Physical therapy, Compression sleeve, “Gel” injections, etc) no longer provide relief… then you can determine if you feel the risks of surgery are worth the potential benefit. The decision to proceed with a knee replacement is a quality of life decision. There are many “decision aides” online to help you try and determine the best way to proceed. This is but one example

  4. Josephine Arnold says

    April 19, 2019 at 11:36 am

    Is this a procedure that can help someone who has had a total knee replacement nine months and who has been suffering with recurring bouts of hemarthrosis in the knee for the past four months? I also developed a baker’s cyst which seems to have burst.

    • Howard J. Luks, MD says

      April 20, 2019 at 6:44 am

      Hi Josephine… An embolization might help someone with recurrent hemarthroses after a knee replacement. The problem will be that the bleeding will need to be active when they do the procedure or they may not be able to find the vessel that is the source of the bleeding.

  5. Linda Gray says

    June 11, 2019 at 5:43 pm

    I had arthroscopic surgery on both knees. It was a fell attempt. Now I need bilateral knee replacements. I would like to try this genicular artery embolization. I just had bilateral hip replacement surgery. I need my hips to heal awhile. I wanted to know if there any doctors in Texas who does this procedure. I’m from the Houston area. Thank you for your time.

    • Howard J. Luks, MD says

      June 19, 2019 at 7:20 am

      I do not know if they perform the procedure in Houston. The indications for embolization are narrow, so it is important to have recent X-rays and a good exam.

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Howard J. Luks, MD is an orthopedic surgeon & sports medicine specialist. An expert in shoulder, knee, and other sports injuries, he is widely known as one of the country’s best orthopedic surgeons.

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