Living with knee osteoarthritis can affect nearly every part of daily life. Simple tasks such as getting out of bed, walking to the shops, climbing stairs, or playing with grandchildren can become painful and exhausting.
Osteoarthritis occurs when changes inside the joint lead to inflammation, stiffness, and pain. Over time, the knee may become less flexible and movement more difficult.
Although osteoarthritis is extremely common, treatment options remain limited. Most patients begin with exercise, physical therapy, medications, and injections.
Unfortunately, these approaches do not always provide enough relief. Some people eventually need knee replacement surgery, but surgery is not suitable for everyone. Age, other health conditions, and personal preferences may make major surgery impossible or undesirable.
A new study published in the journal Radiology suggests that another option may soon become available.
Researchers from Charité–Universitätsmedizin Berlin examined a treatment called genicular artery embolization, also known as GAE. The procedure is designed to treat pain by targeting abnormal blood vessels that develop around arthritic knee joints.
Scientists increasingly believe that these extra blood vessels are not innocent bystanders. They may help maintain inflammation and stimulate pain-sensitive nerves around the knee. If these abnormal vessels can be reduced, inflammation and pain may also decrease.
The GAE procedure is minimally invasive, meaning it does not require major surgery. Doctors use imaging guidance to insert a thin catheter into the blood vessels and deliver microscopic gelatin particles into the abnormal arteries around the knee.
The particles are specially designed to dissolve within hours after treatment. Even though they disappear quickly, the treatment may interrupt the processes that contribute to chronic pain.
The study enrolled 194 men and women with persistent knee osteoarthritis pain. All participants had already tried standard treatments for at least three months without sufficient improvement. The researchers performed 239 procedures because some patients required treatment in both knees.
The procedure proved highly successful from a technical standpoint. Every treatment was completed successfully, and serious complications did not occur. Only a few patients developed mild reactions, and these problems resolved on their own.
The researchers then followed participants for one year. Pain scores improved rapidly and remained lower throughout the study period. Measures of daily function also improved considerably.
Patients found it easier to perform everyday activities and reported better quality of life. Many participants were also able to enjoy more recreational activities than before treatment.
Perhaps the most encouraging result was that four out of every five patients achieved improvements large enough to be considered meaningful in clinical practice. For people who have lived with chronic knee pain for years, this level of improvement could make a substantial difference in daily functioning and independence.
Reviewing the findings, this research offers promising evidence that targeting abnormal blood vessels may represent a completely new way of treating osteoarthritis pain. The study’s strengths include its relatively large number of participants, excellent follow-up rates, and favorable safety results.
However, the study was observational and involved only one medical center. Because there was no comparison group receiving another treatment or a placebo procedure, scientists cannot yet determine exactly how much of the improvement was caused by the intervention itself.
Nevertheless, the findings suggest that genicular artery embolization could eventually fill an important treatment gap and provide lasting relief for many people who have exhausted other nonsurgical options.
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Source: Charité–Universitätsmedizin Berlin.
