What to ask about safety before any procedure

What to check before treatment begins

Ask for the full treatment name and each step it involves. PRP means platelet-rich plasma, made by spinning your blood so small clot-forming parts called platelets collect in plasma, the liquid part of blood. The prepared blood product is then placed into the sore joint. Now you know what the short name means.

The concentrated form contains more platelets than the first preparation. Its name doesn't tell you the exact amount. Ask how much more is present and why that difference matters for you. Write down the answer before choosing treatment.

Ask how much soreness or swelling is expected afterward. Have the clinician state how many hours or days each symptom may last. Call if either symptom lasts beyond the stated time or grows worse. Also ask whom to contact when the office is closed.

Carry a written list of every medicine and supplement you take. Some medicines can affect bleeding before or after a procedure. Don't stop a prescribed drug without speaking to the prescriber. The clinic can help you arrange that call.

Tell the office about any recent illness before care begins. Mention bleeding trouble or problems after an earlier procedure. Those facts can change whether care is safe that day. Waiting may be safer until the illness has passed.

When to go for prompt medical care

Get prompt care when the joint becomes hot, swells badly, or worsens fast. Fever or a sick feeling makes the need more urgent. Don't wait for an online reply when those symptoms occur together. An in-person exam can check for a serious joint problem.

Sudden trouble standing on the sore joint also needs quick attention. Get help after a hard fall or a visible change in the joint. New numbness or weakness can mean a nearby nerve is involved. Those symptoms can't wait for a planned clinic appointment.

For milder soreness, watch how the joint responds to easy movement. A cold pack may ease swelling after an active period. Heat may loosen stiffness before you start moving. Stop any home care that clearly makes the joint worse.

Before treatment, ask about risks, cost, and other choices. Take the answers home if you need more time. You can ask whether knee or hip surgery alternatives fit your exam. QC Kinetix clinicians can review safety and explain regenerative treatments, meaning non-surgical care that may place the prepared product from your blood into the sore joint.

Evidence sources

1. 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.. Clinical rheumatology, 2026.

2. A meta-analysis of 9 Level-1 trials (671 patients) of adipose stromal vascular fraction and adipose-derived MSC injections for knee OA found SVF superior to saline or hyaluronic acid on pain and function at 3, 6 and 12 months - but INFERIOR to corticosteroid at 3 months, no different at 6, and only comparable or slightly superior at 12. Adipose-derived MSCs beat saline and conservative care but showed no significant difference versus HA. No serious adverse events were attributed to the injections themselves, though complications associated with the LIPOSUCTION step were observed.

   Han JH, et al. — Intra-articular Stromal Vascular Fraction and Mesenchymal Stem Cell Injections Show Variable Efficacy and Higher Potential Complications Compared to Corticosteroid and Hyaluronic Acid in Treatment of Knee Osteoarthritis: A Meta-analysis of Randomized Controlled Trials.. Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association, 2025.

3. A systematic review and meta-analysis of adverse events associated with intra-articular PRP injections for knee OA, compared against other injectates. Included so the safety statement on these pages rests on a pooled adverse-event analysis rather than on the absence of reported harm in individual small trials.

   Nakagawa HF, et al. — Assessment of adverse events and safety associated with intra-articular platelet-rich plasma injections compared to other injectates for knee osteoarthritis: A systematic review and meta-analysis.. PM & R : the journal of injury, function, and rehabilitation, 2026.

4. A CDC-led national public health investigation identified culture-confirmed bacterial infections in 20 patients (median age 63) across 8 US states who received umbilical cord blood-derived products marketed as stem cell treatment for pain, osteoarthritis, rheumatoid arthritis and injury. ALL BUT ONE REQUIRED HOSPITALISATION. Of unopened, undistributed product vials sampled, 65% (22 of 34) were contaminated with at least one of 16 bacterial species, mostly enteric; whole-genome sequencing linked an Arizona patient isolate to product administered in Florida.

   Hartnett KP, et al. — Investigation of Bacterial Infections Among Patients Treated With Umbilical Cord Blood-Derived Products Marketed as Stem Cell Therapies.. JAMA network open, 2021.

5. The MMWR Notes from the Field that opened the umbilical-cord-product infection investigation: bloodstream and JOINT infections in patients who received injections of non-FDA-approved umbilical cord blood-derived products, reported first through the Texas and Florida state health departments in September 2018 and followed by a manufacturer recall.

   Perkins KM, et al. — Notes from the Field: Infections After Receipt of Bacterially Contaminated Umbilical Cord Blood-Derived Stem Cell Products for Other Than Hematopoietic or Immunologic Reconstitution - United States, 2018.. MMWR. Morbidity and mortality weekly report, 2018.

6. In a 2-year RCT, intra-articular triamcinolone given every 12 weeks for knee OA produced significantly GREATER cartilage volume loss than saline, with no significant pain benefit. The most widely used joint injection in medicine is itself associated with structural harm on repeat dosing - relevant context when a clinic frames a biologic as 'the alternative to steroid shots'.

   McAlindon TE, et al. — Effect of Intra-articular Triamcinolone vs Saline on Knee Cartilage Volume and Pain in Patients With Knee Osteoarthritis: A Randomized Clinical Trial.. JAMA, 2017.