# What the evidence can tell you about a sore joint *What Evidence Shows | Joint Regeneration Scottsdale* > Joint regeneration Scottsdale answers that separate symptom relief, scan findings, and product status. After a long spell in a chair, a hip may ache and then loosen. That relief tells you how the hip feels, but not why it hurts. A study may show that a group felt better after certain care. It can't tell you in advance how your joint will respond. ## What a better day really shows Less aching and easier walking are changes you can notice and describe. A scan checks the joint itself, so it answers a different question. Cartilage is the smooth layer that coats each bone end inside the joint. A later scan may look unchanged even when walking feels easier. Changes on a scan may also occur while soreness stays much the same. Ask whether the reported result was less pain, easier movement, or a scan finding. Choose one goal you can judge, such as sleeping longer or walking farther. Write down how far you manage now before paying for care. ## What to ask when results sound certain Ask whether the report looked at that joint and the exact procedure. Then ask how long people kept any relief and what they could do afterward. A product's review status says whether its exact use was checked under health rules. It doesn't show whether the choice fits your heart, medicines, or daily needs. Shown means the study found a measured result in the people who took part. Suggested means the result may help, while your own response is still unknown. A careful clinician will separate those answers without promising a result. Take time until you understand which claim rests on a scan and which rests on comfort. ## What to do when ordinary care is not enough When soreness stays, QC Kinetix may discuss regenerative treatments that use blood or another tissue from the body. These non-surgical procedures follow an exam of the joint. Ask whether the care seeks more comfort, freer movement, or something visible on a scan. New joint tissue isn't promised, even if the word regenerative is used. You can compare the proposed procedure with more home care or surgery when it applies. The choice should fit your health, budget, and daily goal. Ask when the clinic will check progress and what happens if relief never comes. A clear answer should name the next step, the possible benefit, and the risk. ## Sources 1. 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. 2. 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. 3. 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. 4. 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. ## What to do when soreness does not settle At its Scottsdale clinic, QC Kinetix offers regenerative treatments made with blood or another tissue from the body. These non-surgical procedures follow an exam and a consultation. Take a medicine list, earlier images, and a short note about the activity that hurts. Call (602) 837-PAIN when you're ready to arrange the visit. Talk to the clinic team: --- Plain answers for a joint that aches. Plain help for an aching joint, simple relief, warning signs, and non-surgical choices in Scottsdale. Plain Scottsdale help for aching joints, simple relief, warning signs, and nearby care. This site is operated by the owners of the QC Kinetix Phoenix-area clinics, including the Scottsdale location it recommends, and the business may benefit when readers book. © 2026 Scottsdale Joint Route. General education only, not personal medical or legal advice; seek prompt care for urgent symptoms.