# Treatment may ease soreness without rebuilding the joint *What Treatment Can Do | Regenerative Therapy Gilbert* > Regenerative therapy Gilbert evidence explained through the results that matter most: less soreness, easier movement, and honest limits on joint change. Judge treatment by changes in an ordinary task. Useful goals include easier steps, longer sleep, or a farther walk. A scan doesn't need to change for those gains to matter. The reverse is also true because a scan may look different while the joint still hurts. Cartilage is the slick cap where joint bones meet. It has no nerves, so soreness can come from bone, muscles, or swelling nearby. A changed scan and an easier day measure different results. ## Human studies show mixed relief and little clear rebuilding PRP stands for platelet-rich plasma: pale blood fluid holding extra pieces that help clots form. An office makes it by spinning a blood sample so those pieces gather together. Soreness falls for some people, while others improve just as much after saline, which is plain salt water. Human studies don't show a sure result for every joint. The clearest studies also haven't found reliable repair of worn cartilage. Regeneration means growing or repairing tissue, but current research doesn't show that PRP rebuilds an older joint. A person may still feel better even when the joint itself looks the same. Those are different results. Ask which daily task may improve and when relief may start. Also ask what result would mean the treatment didn't help. Clear goals make the later checkup useful. ## Your own notes show whether relief is meaningful Pick one task that soreness now limits, perhaps leaving a chair, reaching a shelf, or finishing a walk. Record the distance or motion, plus the soreness afterward. Keep the test simple enough to repeat safely. Don't judge treatment from one good morning because sleep, weather, activity, and medicine can change soreness each day. Look for lasting relief that shows up during the same task. Your clinician can pair those notes with an exam. Keep moving within a comfortable range while you decide, but ease back if swelling grows or pain turns sharp. Bring your short record to any visit instead of relying on memory. ## Sources 1. FDA states plainly that no stem cell, exosome, stromal vascular fraction, umbilical cord blood, Wharton's jelly or amniotic-fluid product has been approved for the treatment of ANY orthopedic condition - it names osteoarthritis, tendonitis, disc disease, tennis elbow, back pain, hip pain, knee pain, neck pain and shoulder pain individually. The only FDA-approved stem cell products in the United States are cord-blood-derived blood-forming stem cells for disorders of the hematopoietic system, and there are currently no FDA-approved exosome products. US Food and Drug Administration, Center for Biologics Evaluation and Research — [Consumer Alert on Regenerative Medicine Products Including Stem Cells and Exosomes](https://www.fda.gov/vaccines-blood-biologics/consumers-biologics/consumer-alert-regenerative-medicine-products-including-stem-cells-and-exosomes). *FDA*, 2020. 2. The RESTORE trial - a participant-, injector- and assessor-blinded RCT of 288 adults aged 50+ with symptomatic medial knee OA (Kellgren-Lawrence 2-3) - compared three weekly intra-articular PRP injections against saline placebo, with co-primary endpoints of 12-month knee pain and medial tibial cartilage volume on MRI. PRP did not beat placebo on either. It is the single best-designed test of the specific claim that PRP changes joint structure, and it was negative. Bennell KL, et al. — [Effect of Intra-articular Platelet-Rich Plasma vs Placebo Injection on Pain and Medial Tibial Cartilage Volume in Patients With Knee Osteoarthritis: The RESTORE Randomized Clinical Trial.](https://pubmed.ncbi.nlm.nih.gov/34812863/). *JAMA*, 2021. DOI: 10.1001/jama.2021.19415. 3. A four-arm, multicentre, single-blind phase 2/3 randomized trial of 480 knee OA patients (KL II-IV) compared autologous bone marrow aspirate concentrate, autologous adipose stromal vascular fraction and allogeneic umbilical-cord-tissue mesenchymal stromal cells against a corticosteroid injection control. At 12 months NONE of the three orthobiologic injections was superior to another, or to the corticosteroid control, and none of the four groups showed a significant change in MRI osteoarthritis score from baseline. No procedure-related serious adverse events occurred. Mautner K, et al. — [Cell-based versus corticosteroid injections for knee pain in osteoarthritis: a randomized phase 3 trial.](https://pubmed.ncbi.nlm.nih.gov/37919438/). *Nature medicine*, 2023. DOI: 10.1038/s41591-023-02632-w. 4. A 2026 systematic review and meta-analysis of 28 randomized trials of intra-articular mesenchymal stem cell-based therapies in knee OA found significant improvements in several pain and function measures (delta-VAS MD -1.67; KOOS pain MD 15.37) but NO significant difference in WOMAC, KOOS quality of life or the Lequesne index, and MRI-based WORMS scores were non-significant - indicating no consistent structural benefit. Its own conclusion: these therapies serve a primarily SYMPTOM-modifying rather than STRUCTURE-modifying role, with higher frequencies of local reactions to weigh against the symptomatic benefit. Awad G, et al. — [Efficacy and safety of intra-articular mesenchymal stem cell-based therapies in knee osteoarthritis: A systematic review and meta-analysis of randomized controlled trials.](https://pubmed.ncbi.nlm.nih.gov/41863718/). *Clinical rheumatology*, 2026. DOI: 10.1007/s10067-026-08042-w. 5. FORWARD, the longest disease-modifying osteoarthritis drug trial reported to date, gave intra-articular sprifermin (a recombinant FGF-18) or placebo to knee OA patients and followed 378 of them for 5 years. Sprifermin produced a significant, sustained dose-response INCREASE in total femorotibial cartilage thickness versus placebo - and WOMAC pain improved about 50% from baseline in ALL groups, including placebo. It is the cleanest demonstration in the literature that adding measurable cartilage and relieving pain are two different results, and that one does not deliver the other. Eckstein F, et al. — [Long-term structural and symptomatic effects of intra-articular sprifermin in patients with knee osteoarthritis: 5-year results from the FORWARD study.](https://pubmed.ncbi.nlm.nih.gov/33962962/). *Annals of the rheumatic diseases*, 2021. DOI: 10.1136/annrheumdis-2020-219181. 6. A GRADE-rated systematic review and meta-analysis of 16 randomized trials (807 participants) found that MSC therapy for chronic knee OA pain PROBABLY RESULTS IN LITTLE TO NO DIFFERENCE in pain relief at 3-6 months (WMD -0.74 cm on a 10 cm VAS against a minimally important difference of 1.5 cm) or physical functioning (WMD 2.23 on the SF-36 100-point subscale against a 10-point MID), both moderate certainty; at 12 months pain was again probably little-to-no-different (WMD -0.73 cm). The measured effect is real but sits BELOW the threshold at which a patient would notice it. Sadeghirad B, et al. — [Mesenchymal stem cells for chronic knee pain secondary to osteoarthritis: A systematic review and meta-analysis of randomized trials.](https://pubmed.ncbi.nlm.nih.gov/38777213/). *Osteoarthritis and cartilage*, 2024. DOI: 10.1016/j.joca.2024.04.021. ## A visit can match care to your sore joint Bring notes, medicine names, and past records. At 1100 S. Dobson Rd., Suite 210, Chandler, AZ 85286, QC Kinetix offers a consultation with medical providers, the clinicians who examine you and oversee care, and explains non-surgical regenerative treatments, including PRP made by spinning blood to gather more clot-forming pieces; call (602) 837-PAIN / (602) 837-7246. Book a free consultation: --- Clear answers about joint soreness and ways to ease it. Regenerative therapy Gilbert information about aching joints, gentle movement, urgent symptoms, treatment choices, cost, and the nearby clinic. Plain information for Gilbert residents about aching joints, home care, urgent symptoms, costs, and nearby treatment choices. This site is operated by the owners of the QC Kinetix Phoenix-area clinics, including the Chandler location it recommends, and those owners may benefit when a reader books a consultation. Copyright 2026 Gilbert Price & Proof. General education only; a clinician who examines you should guide decisions about your own joint.