The goal of this clinical trial is to learn whether a one-time injection of a person's own concentrated fat (micro-fragmented adipose tissue, or MFAT) 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.
Age range
18 Years – 80 Years
Sex
ALL
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A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Change From Baseline in Patient-Reported Pain Intensity (Numeric Rating Scale, NRS) at 6 Months
Timeframe: Baseline (pre-procedure) and Month 6