# What to ask when a joint stays sore *Straight Joint Answers — Biologic Therapy Tempe* > Straight answers about biologic therapy, PRP, joint soreness, cost, and the blood-based care QC Kinetix can discuss after an exam. Night soreness can leave you worn out by breakfast. Treatment claims are harder to sort when you haven't slept. The answers below explain what is done and what remains uncertain. Start with the question that matches your concern. ## What to check before you choose joint care This site is operated by the owners of the QC Kinetix clinics serving the Phoenix area — Chandler, Scottsdale, Peoria and Banner Estrella. Those owners benefit when you arrange a visit. The sources for these joint answers appear below. Read them, then ask how each answer fits your own exam. ## Sources 1. The 2025 Cochrane review of stem cell injections for knee osteoarthritis pooled 25 randomised trials (1,341 participants) and found that, compared with placebo injection, stem cell injection MAY slightly improve pain (1.2 points better on a 0-10 scale, 7 studies, 445 participants) and function (14.2 points better on a 0-100 scale, 7 studies, 432 participants) up to six months - both rated LOW-certainty evidence, downgraded for indirectness (cell source, preparation and dose varied across studies) and suspected publication bias, since up to three larger RCTs were conducted and withdrawn before reporting results. Radiographic progression was not assessed in any included study. Whittle SL, et al. — [Stem cell injections for osteoarthritis of the knee.](https://pubmed.ncbi.nlm.nih.gov/40169165/). *Cochrane Database of Systematic Reviews*, 2025. DOI: 10.1002/14651858.CD013342.pub2. 2. A network meta-analysis of 43 trials (5,554 patients) reached the OPPOSITE ranking to the more recent orthobiologic-favourable reviews: steroids ranked most likely to be effective for pain and function, with adipose MSC and multiple PRP ranked LEAST likely; single PRP, multiple PRP and adipose MSC did not produce a relevant reduction in pain or improvement in function versus placebo. The authors noted treatment-effect differences were small and potentially not clinically meaningful either way. Han SB, et al. — [Intra-Articular Injections of Hyaluronic Acid or Steroids Associated With Better Outcomes Than Platelet-Rich Plasma, Adipose Mesenchymal Stromal Cells, or Placebo in Knee Osteoarthritis: A Network Meta-analysis.](https://pubmed.ncbi.nlm.nih.gov/32305424/). *Arthroscopy*, 2021. DOI: 10.1016/j.arthro.2020.03.041. 3. The only randomized controlled trial of alpha-2-macroglobulin for knee osteoarthritis allocated 75 patients with KL grade 2-3 disease to A2M-rich concentrate, conventionally prepared PRP, or methylprednisolone, with 12-week follow-up. The A2M group improved significantly from baseline on VAS, WOMAC, KOOS and Tegner; the PRP group improved on none; the steroid group improved on Lysholm only. Critically, the CHANGE in scores did not differ significantly between the three groups - A2M was comparable to, not better than, PRP and corticosteroid. Thompson K, et al. — [The Effectiveness of Alpha-2-Macroglobulin Injections for Osteoarthritis of the Knee.](https://pubmed.ncbi.nlm.nih.gov/39259950/). *Bulletin of the Hospital for Joint Diseases*, 2024. 4. The BMJ meta-analysis of viscosupplementation pooled 169 trials (21,163 participants) and found clear evidence of small-study effects and publication bias. In the prespecified main analysis of 24 LARGE placebo-controlled trials (8,997 participants) hyaluronic acid reduced pain by SMD -0.08 (95% CI -0.15 to -0.02), equivalent to 2.0 mm on a 100 mm scale - far below the -0.37 minimal important difference - and trial sequential analysis showed there has been CONCLUSIVE evidence of clinical equivalence to placebo since 2009. Fifteen large trials showed a significantly higher risk of serious adverse events (RR 1.49). Pereira TV, et al. — [Viscosupplementation for knee osteoarthritis: systematic review and meta-analysis.](https://pubmed.ncbi.nlm.nih.gov/36333100/). *BMJ*, 2022. DOI: 10.1136/bmj-2022-069722. ## Does PRP work? Platelet-rich plasma (PRP) uses blood taken from you. The clinic spins the sample, keeps plasma with more platelets, and places it at the sore joint. Some people feel less soreness, while others don't. Studies haven't shown that PRP rebuilds worn cartilage. ## Is PRP nonsense? No. PRP has been studied, but the findings don't all agree. Some people improve, while some careful studies found little difference. A medical provider, the health care person who examines you, can explain whether it fits your joint. ## Can PRP rebuild knee cartilage? Research hasn't shown that PRP rebuilds worn cartilage. Feeling better isn't the same as repairing the joint itself. Ask what amount of relief or added movement is expected. That question keeps the claim clear. ## Which orthobiologic has the strongest evidence? An orthobiologic is body material prepared for use at a sore joint. PRP has more research than many choices in this group. That doesn't promise it will help you. An exam needs to come before your choice. ## When might PRP start helping? Relief isn't always immediate. The joint can feel more sore at first. Ask when swelling or soreness means you need to call. Also ask when the provider will check whether treatment helped. ## How much does biologic care cost in Arizona? Biologic care here means treatment prepared from your blood at the clinic. The cost isn't the same for every option. Ask for one full written price, including later visits. Don't rely on a price that leaves out details. ## What to do when you want the joint checked General advice can't tell you what causes this ache. An exam checks movement, swelling, strength, and tender areas. Bring old reports and your current medicine list. QC Kinetix offers visits with its medical team. Biologic therapies means the team draws your blood, prepares part of it there, and places that part at the sore area. You may also hear the names natural pain treatments or regenerative treatments for this blood-based care. These non-surgical choices aim to calm soreness and make movement easier. No one knows exactly how you will respond. Ask about the price, recovery, and the next step if treatment doesn't help. Decide when you're ready. Call (602) 837-PAIN for any of the four Valley locations. Book a free consultation: --- Plain answers for an aching joint. Biologic therapy Tempe guidance on sore joints, home relief, warning signs, and options using blood taken from you at QC Kinetix. Plain help for joint soreness and your next step. This site is operated by the owners of the QC Kinetix clinics serving the Phoenix area — Chandler, Scottsdale, Peoria and Banner Estrella — so the people grading this evidence are also the people who benefit when you book, which is precisely why every figure here names the study behind it and links to the source. © 2026 Tempe Evidence Ledger. General education about how joint research is graded, not medical advice about your own joint — take that to a clinician.