# Plain questions about joint soreness *Straight Answers | Joint Regeneration Queen Creek* > Joint regeneration Queen Creek questions answered plainly about soreness, cartilage, treatment choices, cost, and urgent signs. What do people most often ask about a sore joint? They want to know what the treatment is, whether it may help, and what it costs. You’ll find direct answers here. They can prepare you for a visit. These answers can’t name the cause of your soreness, because that takes an exam. They also can’t predict a result for one person. Please use them to form better questions. Your health and the joint exam will guide any choice. ## Sources 1. The AAOS third-edition clinical practice guideline for non-arthroplasty management of knee osteoarthritis is the orthopedic profession's own GRADE-style appraisal of the same options a regenerative clinic sells; it is the benchmark against which any 'regenerative' claim on this topic should be read, and it rates the strongest support for exercise, weight loss and self-management rather than for injectables. Brophy RH, et al. — [AAOS Clinical Practice Guideline Summary: Management of Osteoarthritis of the Knee (Nonarthroplasty), Third Edition.](https://pubmed.ncbi.nlm.nih.gov/35383651/). *The Journal of the American Academy of Orthopaedic Surgeons*, 2022. DOI: 10.5435/JAAOS-D-21-01233. 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. A cross-sectional study contacted 273 of 317 US centres offering direct-to-consumer stem-cell therapy, posing as a 57-year-old man with knee osteoarthritis. The mean advertised price of a unilateral same-day stem-cell knee injection was $5,156 (SD $2,446), and centres claimed a mean clinical efficacy of 82% (SD 9.6%) - a figure with no support in the published evidence. The gap between the quoted number and the trial data is the single most useful thing a patient can be told before a consultation. Piuzzi NS, et al. — [The Stem-Cell Market for the Treatment of Knee Osteoarthritis: A Patient Perspective.](https://pubmed.ncbi.nlm.nih.gov/28738432/). *The journal of knee surgery*, 2018. DOI: 10.1055/s-0037-1604443. 6. 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 is regenerative medicine? Regenerative medicine describes office care made with prepared blood, fat, marrow, or donated birth tissue and placed in the sore joint. PRP means platelet-rich plasma; the office spins your blood and saves the part rich in platelets. The name doesn’t promise that cartilage will grow back. Please ask exactly which material would be used. ## Does regenerative therapy work for knees? Research on PRP for sore knees has mixed results: some people report less soreness, while others do not. The studies don’t provide one dependable success rate for every knee. Feeling better also doesn’t prove that worn cartilage was rebuilt. Ask which result you could reasonably expect after your exam. ## Can cartilage regenerate in a worn joint? Research hasn’t shown that common office care reliably rebuilds cartilage in a worn joint. Some people may still report better comfort or movement. Those are different results. Ask whether a claim means less soreness, easier daily tasks, or new cartilage seen on an image. ## When might regenerative care be a poor fit? This care may be a poor fit when the soreness hasn’t been examined or simpler care may still help. Advanced wear or a joint that gives way under you may call for physical therapy or a surgical opinion instead. Cost matters too. Ask which finding from your exam supports the proposed treatment. ## What affects regenerative medicine cost? The price can vary with the material used, how it is prepared, and the later visits. Insurance may not cover some office treatments. You’ll want the total price in writing before deciding. Ask what is included and whether another visit brings another charge. ## Which joint warning signs need faster care? Go to an emergency room when a joint becomes very hot and badly swollen while you have a fever. Sudden trouble standing after a fall, new numbness, or great weakness also needs emergency care. So does losing control of your bowel or bladder. If soreness worsens after office care, call the office that performed it. ## What to bring to the conversation You’re welcome to bring short notes about when the soreness began and which movements bother the joint. Please ask about the exam, each treatment choice, the total cost, and later visits. You can take the answers home before deciding. Book a free consultation: --- A welcome place for clear joint answers. Clear Queen Creek help with joint soreness, home care, office treatment choices, and the nearest clinic. Warm, plain help for Queen Creek residents with joint soreness and treatment questions. This site is operated by the owners of the QC Kinetix Phoenix-area clinics, including the Chandler location recommended here, and those owners benefit when a reader books a consultation. © 2026 Queen Creek Joint Field Notes. A clinician who examines you should direct personal medical decisions; this material is general health education only.