# What to ask about a sore joint *Plain Answers | Stem Cell Clinic Mesa* > Stem cell clinic Mesa answers about aching joints, home steps, urgent symptoms, visits, PRP, and non-surgical choices. Mesa's north and south routes lead toward different nearby offices. Your first question still concerns the sore joint rather than the drive. The answers below cover home care, warning signs, visits, and office procedures. Each answer gives you a practical next step. ## Sources 1. The OARSI non-surgical management guideline evaluated 60 interventions with GRADE methodology and built its recommendations around core treatments - structured exercise, weight management and self-management education - for every patient with knee osteoarthritis, regardless of what else is added. Bannuru RR, et al. — [OARSI guidelines for the non-surgical management of knee, hip, and polyarticular osteoarthritis](https://pubmed.ncbi.nlm.nih.gov/31278997/). *Osteoarthritis Cartilage*, 2019. DOI: 10.1016/j.joca.2019.06.011. 2. In a 480-patient, four-arm, multicenter randomized phase 2/3 trial, none of three orthobiologic cell injections - autologous bone marrow aspirate concentrate, autologous adipose stromal vascular fraction, or allogeneic umbilical cord tissue-derived mesenchymal stromal cells - was superior to any other, or to a corticosteroid injection control, on pain at 12 months. 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/). *Nat Med*, 2023. DOI: 10.1038/s41591-023-02632-w. 3. FDA states in its consumer alert that the only FDA-approved stem cell products in the United States are blood-forming stem cells derived from umbilical cord blood, approved for disorders of the blood-forming system, and that NONE of these products - stem cells, stromal vascular fraction, umbilical cord blood, Wharton's jelly or amniotic fluid - has been approved for the treatment of any orthopedic condition, including osteoarthritis, tendonitis, disc disease, tennis elbow, back pain, hip pain, knee pain, neck pain or shoulder pain. 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). *null*, 2020. 4. 21 CFR 1271.10(a) sets the four criteria a human cell or tissue product must meet to be regulated SOLELY under section 361 of the Public Health Service Act: it must be minimally manipulated; intended for homologous use only, as reflected by labeling and advertising; not combined with another article beyond water, crystalloids or a preserving agent; and either have no systemic effect and not depend on the metabolic activity of living cells, or else be for autologous use, use in a close blood relative, or reproductive use. US Code of Federal Regulations, Title 21 — [21 CFR 1271.10 - Are my HCT/P's regulated solely under section 361 of the PHS Act](https://www.ecfr.gov/current/title-21/chapter-I/subchapter-L/part-1271/subpart-A/section-1271.10). *null*, 2004. 5. On 27 September 2024 the Ninth Circuit held in United States v. California Stem Cell Treatment Center that stromal vascular fraction produced by enzymatically digesting a patient's own fat IS a drug under the Federal Food, Drug, and Cosmetic Act, and that the same surgical procedure exception does not apply because the removed fat and the implanted SVF are not the same thing. The district court's ruling for the clinics was reversed. United States Court of Appeals for the Ninth Circuit — [United States v. California Stem Cell Treatment Center, Inc., No. 22-56014 (9th Cir. Sept. 27, 2024)](https://cdn.ca9.uscourts.gov/datastore/opinions/2024/09/27/22-56014.pdf). *null*, 2024. 6. In 96 patients, concentrated bone marrow aspirate contained a mean of 26.3 million nucleated cells per mL but only about 1,422 colony-forming units of connective tissue progenitors, and the nucleated cell count had negligible predictive value for how many progenitor cells were actually present (r-squared 0.28). Muench LN, et al. — [Nucleated Cell Count Has Negligible Predictive Value for the Number of Colony-Forming Units for Connective Tissue Progenitor Cells (Stem Cells) in Bone Marrow Aspirate Harvested From the Proximal Humerus During Arthroscopic Rotator Cuff Repair](https://pubmed.ncbi.nlm.nih.gov/33581306/). *Arthroscopy*, 2021. DOI: 10.1016/j.arthro.2021.01.064. ## What should I notice about the soreness? Write down the ache's location and the movement that restarts it. Also note whether rest, easy motion, or a shorter activity helps. Joint wear can make weight harder to spread across a knee or hip. Nearby muscles or a tendon can also become sore after added work. ## What can I try at home first? Reduce the activity that starts the soreness, but keep comfortable movement. Complete rest isn't usually needed and may leave the joint stiffer. Increase strength work in small amounts and check the joint tomorrow morning. Skin medicine, a brace, or a cane may also help. ## When should I seek prompt care? A hot, swollen joint with fever needs prompt care. After an injury, get help soon if you can't stand on the leg. Loss of bladder or bowel control, weakness, or numbness is urgent. After a procedure, call about spreading redness, rising soreness, or fever. ## What should I expect at a clinic visit? The provider asks when the soreness began and which movements bring it back. You may be asked to walk, bend, reach, or turn. Take your current medicines and earlier joint reports. The exam helps compare more home care, an office procedure, or a surgery visit. ## What should I know about PRP and concentrated PRP? PRP starts with your blood, which is spun to gather more platelets. The prepared blood portion is then put into your sore joint. Platelets are tiny pieces in blood that help it clot. The concentrated form contains more platelets, but that doesn't prove greater help. ## What can QC Kinetix offer if soreness doesn't settle? QC Kinetix calls its blood- or marrow-based office procedures regenerative treatments. PRP and concentrated PRP use blood, while a marrow procedure begins at the pelvis. The clinic calls the person doing the exam and procedure a medical provider. Ask if you'll see a doctor, then request the exact steps, cost, aftercare, and follow-up. ## What to do when soreness stays When soreness stays, QC Kinetix offers regenerative treatments, its name for office procedures using your blood or marrow without surgery. The medical provider does the exam and procedure; confirm whether you'll be treated by a doctor. Take your current medicines, earlier joint reports, and notes about daily limits. The Chandler office is at 1100 S. Dobson Road, Suite 210; call (602) 837-PAIN. Book a free consultation: --- Clear answers for a joint that keeps bothering you. For Mesa readers: understand an aching joint, care for it at home, spot urgent symptoms, and compare non-surgical care. Understand the ache, care for the joint, and choose what comes next. This site is operated by the owners of the QC Kinetix Phoenix-area clinics, including the neighboring Chandler and Scottsdale locations described here. Copyright 2026 Mesa Joint Decision. General health education, not medical advice or a diagnosis; urgent symptoms need prompt assessment.