What is Transarterial Embolization for Patellar Tendinopathy?
Transarterial embolization (TAE) is a minimally invasive treatment for chronic patellar tendinopathy, also known as jumper's knee. TAE targets abnormal blood vessels that may contribute to ongoing pain and inflammation when conservative treatments have not provided adequate relief.
For patients whose symptoms continue despite physical therapy, activity modification, or other non-surgical treatments, TAE may offer an alternative to more invasive procedures.
During TAE, an interventional radiologist uses image guidance to identify the abnormal blood vessels associated with chronic patellar tendon pain. A small catheter is inserted through a tiny puncture in the groin and guided to the blood vessels supplying the tendon. Temporary embolic particles are then delivered to reduce blood flow to the abnormal vessels while preserving healthy surrounding tissue — all without surgery.
What Is Patellar Tendinopathy?
Patellar tendinopathy is a chronic condition that affects the patellar tendon, the strong band of tissue that connects the kneecap (patella) to the shinbone (tibia). The patellar tendon plays an important role in knee movement, transferring force from the quadriceps muscles to help you walk, run, jump, climb stairs, and perform athletic activities.
Patellar tendinopathy develops when repetitive stress places excessive strain on the tendon. Over time, the body's attempt to repair the tendon may become ineffective, leading to persistent pain and reduced function. The condition is commonly known as jumper's knee because it frequently affects athletes who participate in sports that involve repeated jumping, sprinting, and rapid changes in direction.
What Causes Chronic Patellar Tendinopathy?
Patellar tendinopathy is often associated with repetitive loading of the tendon. Chronic symptoms may be linked to changes within the tendon, including:
- Abnormal blood vessel growth: The body may develop abnormal blood vessels, called neovessels, within the damaged tendon tissue. These blood vessels can form in response to ongoing stress and failed healing.
- Sensitive nerve fibers: New nerve fibers may grow alongside these abnormal blood vessels. These nerves can become highly sensitive and contribute to ongoing pain.
- Persistent pain and inflammation: Together, these abnormal blood vessels and nerve fibers may create a cycle of chronic pain and localized inflammation that does not fully resolve with rest alone.
What Are the Symptoms?
Patients with patellar tendinopathy commonly experience:
- Pain at the front of the knee just below the kneecap
- Localized tenderness along the patellar tendon
- Pain during or after running, jumping, squatting, or climbing stairs
- Knee pain that limits sports participation or exercise
- Difficulty performing activities that place stress on the knee
- Persistent symptoms despite conservative treatment efforts
Who Can Benefit
TAE may be considered for patients who have chronic patellar tendon pain that has not improved with conservative treatment, and who:
- Have experienced symptoms for at least three months.
- Have pain that limits sports participation, exercise, work, or daily activities.
- Have not achieved adequate relief with non-surgical treatment, including physical therapy, rest, and activity modification.
- Want to avoid corticosteroid injections or surgery.
- Are interested in a minimally invasive treatment option.
A consultation with an interventional radiologist can help determine whether TAE is appropriate for your condition.
What to Expect
Before the procedure
- Your physician may review imaging studies such as MRI or ultrasound, along with your medical history and previous treatments, to determine whether TAE is an appropriate option.
- Your doctor will explain the procedure, its benefits, risks, and available alternatives.
- You may need to adjust or stop certain medications before the procedure.
During the procedure
- TAE is performed as an outpatient procedure using image guidance.
- An interventional radiologist inserts a small catheter through a tiny puncture, usually in the groin.
- The catheter is guided to the abnormal blood vessels associated with chronic patellar tendon pain.
- Temporary embolic particles are delivered to reduce blood flow to the abnormal vessels while preserving healthy surrounding tissue.
After the procedure
- Most patients return home the same day.
- Many patients begin to notice improvements in pain and function within the first month after treatment.
- Clinical improvements often continue over the following three to six months as inflammation decreases and recovery progresses.
- Your physician will provide individualized guidance regarding activity progression and return to exercise or sports.
Benefits of TAE for Patellar Tendinopathy
TAE is designed to reduce chronic knee pain and improve function by targeting the abnormal blood vessels associated with patellar tendinopathy. Potential benefits include:
- Reduced knee pain: Targeting the abnormal vessels that drive chronic inflammation and pain
- Improved function and activity levels: Many patients report meaningful improvements in mobility and daily activities
- Return to sports participation: Clinical studies report successful return to athletic activity following treatment
- Improved tendon structure: Improvement in tendon structure has been observed on follow-up imaging
- Minimally invasive: No large incisions, hospital stay, or implanted devices
Frequently Asked Questions (FAQs)
Why Choose UHealth for Patellar Tendinopathy Treatment?
At the University of Miami Health System, patients receive comprehensive evaluation and treatment from specialists experienced in minimally invasive therapies for chronic musculoskeletal pain.
- Specialized expertise: TAE is performed by interventional radiologists with specialized training in minimally invasive, image-guided vascular procedures.
- Collaborative care: Our Interventional Radiology team works closely with sports medicine specialists and orthopedic surgeons to ensure each patient receives an individualized evaluation and treatment strategy.
- Advanced imaging: State-of-the-art imaging is used for diagnosis, pre-procedural planning, and precise intraoperative guidance.
- Personalized treatment: Whether your goal is returning to competitive sports, resuming exercise, or simply performing daily activities with less pain, our team develops a treatment plan tailored to your needs and functional goals.
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