Blood-Derived injection may heal stubborn knee tendon pain — trial puts it to the test
NCT ID NCT01843504
First seen Jul 22, 2026 · Last updated Jul 23, 2026 · Updated 1 time
Summary
This trial investigates whether a single injection of platelet-rich plasma (PRP), made from a person's own blood, can reduce pain and improve function in chronic patellar tendinopathy (knee tendon pain). The study includes 29 adults aged 18–65 who have had tendon pain for over three months and have not improved with physical therapy or other common treatments. Researchers will use ultrasound imaging to track tendon changes over 32 weeks.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- a single injection of platelet-rich plasma (PRP) made from the participant's own blood
- What this could lead to
- If effective, PRP injections could offer a non-surgical treatment option for chronic patellar tendinopathy, reducing pain and improving knee function.
- What could go wrong
- This is a small Phase 2 trial with only 29 participants, so results may not apply broadly. PRP injections can cause temporary pain or swelling at the injection site.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for CHRONIC PATELLAR TENDINOPATHY are added.
By submitting, you agree to our Terms of use
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
By submitting, you agree to our Terms of use
Locations
-
UW Sports Medicine Clinic at Research Park
Madison, Wisconsin, 53711, United States
-
Wisconsin Institute of Medical Research
Madison, Wisconsin, 53705, United States