# What soreness, x-rays, and scans can tell you *Soreness and x-rays | Regenerative Medicine Surprise* > Regenerative medicine Surprise help with what soreness means, what x-rays or scans can show, and when a joint needs care. You’ll learn what soreness can reveal and when x-rays or scans may help. Watch the ache each day, then ask what a test found. Neither can give the whole answer alone. ## What to notice before an exam Notice whether the ache came slowly or followed a fall, twist, or hard day. Swelling, warmth, stiffness, and lost motion help the doctor find the sore part. Trouble may sit inside the joint, in muscle, or where muscle joins bone. Soreness alone can’t locate it. ## What to write down each day For several days, record the soreness after sleep, sitting, errands, and rest. Add the distance you walked or the arm motion that made you stop. Write down how long the ache stayed after the task ended. Memory can miss a hard afternoon, but your written notes won’t leave it out. ## What to ask about x-rays or scans An x-ray can show that the gap between bones has narrowed, while a scan may show softer parts around the joint that an x-ray can’t show as well. A worn-looking joint may ache little, while a better-looking one may hurt more. Ask the doctor which finding matches your sore spot and whether it changes the care you can try. ## When to seek care sooner Don’t wait for a scheduled visit when a joint becomes very warm and swollen and illness comes with it. After a fall, get help if its shape looks wrong or it won’t move. New weakness or lost feeling also needs quick care. For steady soreness, QC Kinetix medical providers, meaning clinic staff who examine joints, discuss regenerative treatments such as a shot using blood taken and spun there. ## 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. 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. 5. 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. 6. A systematic review of the discordance between clinical and radiographic knee osteoarthritis: many people with severe-looking x-rays have little pain, and many with disabling pain have modest radiographic change. This is the reason a post-treatment scan is a poor proxy for how someone feels, in either direction. Bedson J, et al. — [The discordance between clinical and radiographic knee osteoarthritis: a systematic search and summary of the literature.](https://pubmed.ncbi.nlm.nih.gov/18764949/). *BMC musculoskeletal disorders*, 2008. DOI: 10.1186/1471-2474-9-116. 7. 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 ask at the visit Bring the names of your pills, old x-rays or scan reports, and notes on what makes the joint ache. Name the daily task you’d like to handle with less trouble. Ask about the entire price, the relief you might notice, and when you can judge the result. A website can’t tell whether the ache comes from bone, muscle, or another part of the joint. An exam can help, while sudden warning signs need care equipped for quick tests. QC Kinetix medical providers, meaning the clinic staff who examine you, can discuss regenerative treatments such as a joint shot made after your blood is drawn and spun. Book a free consultation: --- Plain help for a sore joint Simple answers for sore joints in Surprise, including daily care, urgent changes, and treatment choices. Plain help with joint soreness, home care, clinic choices, and honest limits for Surprise readers. Surprise Joint Fieldbook is operated by the owners of QC Kinetix's Phoenix-area clinics, making the Peoria referral on these pages a first-party recommendation. Copyright 2026 Surprise Joint Fieldbook. General joint-health education for Arizona readers, not individual medical advice.