What is put near the sore joint?

What comes from my pelvic bone?

Marrow isn't hard bone; it's the soft filling inside your pelvic bone. Clinic staff draw a small amount through a needle near the pelvis. A spinning machine removes some fluid and gathers the remaining material. The finished liquid is called marrow concentrate.

That liquid contains several parts from the marrow and blood. The amount won't be identical between preparations. This matters because the short treatment name doesn't tell you the exact contents. Drawing the marrow can also leave a sore spot near your pelvis.

What does PRP mean in ordinary words?

You'll hear clinic staff say PRP when they mean platelet-rich plasma. It's a pale liquid made from blood drawn from your arm. A spinning machine separates the liquid and gathers extra platelets. Platelets are small blood pieces used when a clot forms.

The prepared portion may then go near the sore area. With concentrated PRP, staff gather more platelets than with regular PRP. The finished amount won't be alike with every preparation method. Ask which kind is planned and why the clinic chose it.

What does donated tissue mean?

Some products begin with donated tissue, meaning soft body material from another person. It often comes from an umbilical cord or amniotic sac, the fluid-filled bag around a baby before birth. The supplied material may reach the clinic frozen.

Ask who supplied the product and which birth material was used. Find out whether it was checked for germs before reaching the clinic. If it arrived frozen, ask how staff stored and thawed it. You'll be able to review those answers with your own doctor.

What should I ask before it's used?

First ask whether the liquid begins with your blood, marrow, or donated material. For care using your own material, ask what staff will take. Ask how a machine prepares the liquid and whether anything is added. Then find out exactly where the finished liquid will be placed.

Get the full treatment name before you agree to care. If that name isn't clear, ask clinic staff to explain it without short forms. The written answer should match what staff described during the visit. You'll then have useful details for your own doctor.

Sources

1. The International Society for Cell & Gene Therapy position statement holds that the acronym MSC should mean mesenchymal STROMAL cells and should only be called stem cells where rigorous in vitro and in vivo evidence of stemness exists for that specific preparation.

   Viswanathan S, et al. — Mesenchymal stem versus stromal cells: International Society for Cell & Gene Therapy (ISCT®) Mesenchymal Stromal Cell committee position statement on nomenclature. Cytotherapy, 2019. DOI: 10.1016/j.jcyt.2019.08.002.

2. The 2018 AAOS/NIH consensus work group recommended that minimally manipulated mixed cell preparations be called CELL THERAPY rather than stem cell therapy, and that their untested and uncharacterised nature be clearly communicated to patients and the public, because stem cells have properties these preparations do not meet.

   Chu CR, et al. — Optimizing Clinical Use of Biologics in Orthopaedic Surgery: Consensus Recommendations From the 2018 AAOS/NIH U-13 Conference. J Am Acad Orthop Surg, 2019. DOI: 10.5435/JAAOS-D-18-00305.

3. 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). , 2024.

4. A laboratory study of three commercially available amniotic fluid products marketed for orthopedic use found no viable mesenchymal stem cells in any of them when compared against unprocessed amniotic fluid and bone marrow-derived MSC samples - products sold as 'amniotic stem cell therapy' contained no living stem cells.

   Panero AJ, et al. — Are Amniotic Fluid Products Stem Cell Therapies? A Study of Amniotic Fluid Preparations for Mesenchymal Stem Cells With Bone Marrow Comparison. Am J Sports Med, 2019. DOI: 10.1177/0363546519829034.

5. 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. Nat Med, 2023. DOI: 10.1038/s41591-023-02632-w.