NCT07748793 · Weill Medical College of Cornell University
Autologous Fat Grafting for the Treatment of Chronic Tendinopathy
(ASSET)
What this study is about
The goal of this clinical trial is to learn whether a one-time injection of a person's own processed fat tissue (autologous lipoaspirate), a procedure called Adipose Stem/Stromal Cells for Enthesis/Tendon Therapy (ASSET), can reduce pain and improve function in adults (ages 18-80) with chronic tendinopathy- tendon pain lasting more than 3 months (for example, in the shoulder, elbow, hip, knee, or Achilles) - that has not improved with usual treatments such as physical therapy, cortisone shots, or platelet-rich plasma. The main questions it aims to answer are: * Does injecting a person's own concentrated fat into a painful tendon reduce tendon pain? * Does it improve how well the tendon works, how long does any improvement last, and is the procedure safe? This is a single-group study, so there is no separate comparison group; each participant's pain, function, and ultrasound results after treatment are compared with their own measurements taken before treatment. Participants will: * Have a one-time procedure in which a small amount of fat is removed from the abdomen by liposuction (under local numbing), concentrated, and injected into the painful tendon using ultrasound guidance. * Complete short pain and function questionnaires and have ultrasound imaging of the tendon at study visits. * Be followed for about 12 months, with a phone or video check-in 3-7 days after the procedure, a 2-week skin check of the fat-removal site, and visits at 6 weeks, 3 months, 6 months, and 12 months.
View original scientific description
The goal of this clinical trial is to learn whether a one-time injection of a person's own processed fat tissue (autologous lipoaspirate), a procedure called Adipose Stem/Stromal Cells for Enthesis/Tendon Therapy (ASSET), can reduce pain and improve function in adults (ages 18-80) with chronic tendinopathy- tendon pain lasting more than 3 months (for example, in the shoulder, elbow, hip, knee, or Achilles) - that has not improved with usual treatments such as physical therapy, cortisone shots, or platelet-rich plasma. The main questions it aims to answer are: * Does injecting a person's own concentrated fat into a painful tendon reduce tendon pain? * Does it improve how well the tendon works, how long does any improvement last, and is the procedure safe? This is a single-group study, so there is no separate comparison group; each participant's pain, function, and ultrasound results after treatment are compared with their own measurements taken before treatment. Participants will: * Have a one-time procedure in which a small amount of fat is removed from the abdomen by liposuction (under local numbing), concentrated, and injected into the painful tendon using ultrasound guidance. * Complete short pain and function questionnaires and have ultrasound imaging of the tendon at study visits. * Be followed for about 12 months, with a phone or video check-in 3-7 days after the procedure, a 2-week skin check of the fat-removal site, and visits at 6 weeks, 3 months, 6 months, and 12 months.
Interventions
PROCEDURE
Adipose Stem/Stromal Cells for Enthesis/Tendon Therapy (ASSET) Injection
ASSET i.e., mechanically concentrated autologous lipoaspirate, prepared and delivered in a single, same-day, point-of-care procedure. Under local anesthesia, 5-15 cc of subcutaneous abdominal fat is harvested by small-volume manual liposuction. The lipoaspirate is sterilely rinsed and concentrated by manual rolling on a non-adherent (Telfa) dressing; no enzymatic (collagenase) digestion, cell isolation, culture, or expansion is performed (minimal manipulation). Under ultrasound guidance, percutaneous tenotomy (needle fenestration) of the target tendon is performed, followed by a single intratendinous injection of 1-3 cc of the concentrated graft into the area of tendinopathy. One-time administration; route is percutaneous intratendinous injection. No exogenous cells, additives, scaffolds, or culture are used; the graft is autologous and delivered within the same surgical procedure.
Primary outcome measures
Change From Baseline in Patient-Reported Pain Intensity (Numeric Rating Scale, NRS) at 6 Months
Time frame: Baseline (pre-procedure) and Month 6
Pain in the affected tendon is self-reported on the 11-point Numeric Rating Scale (NRS), an integer from 0 to 10 where 0 = no pain and 10 = worst pain imaginable. The outcome is the mean change from baseline (pre-procedure) to Month 6, calculated as the Month 6 score minus the baseline score. A negative change indicates improvement; a lower score is a better outcome.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Age 18-80 years.
- Tendinopathy at any tendon location (e.g., rotator cuff/supraspinatus, lateral epicondyle, gluteal/hip, Achilles, patellar).
- Confirmed tendon pathology: pain at the tendon site for \> 3 months AND pathology confirmed on ultrasound.
- Failure of conservative treatment (e.g., activity modification, physical therapy, NSAIDs, corticosteroid injection, and/or PRP) for at least 6 weeks.
- Able to provide informed consent and complete questionnaires in English.
Exclusion criteria
- Full-thickness tendon tear.
- Prior surgery at the target tendon site.
- Injection or other intervention at the target tendon site within the prior 6 months.
- Pregnancy or breastfeeding.
- Active local or systemic infection, bleeding diathesis or anticoagulation precluding the procedure, or other condition that in the investigator's judgment makes participation unsafe.
- Moderate-to-high-grade arthritis in the adjacent joint.
Where
- New York, New York
Collaborators
The Plastic Surgery Foundation
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 25, 2026 · Source of record for eligibility and locations