JONATHON PRINTZ, MD

BROOKFIELD, WI

Research Active
Orthopaedic Surgery NPI registered 18+ years 1 publication 2013 – 2013 NPI: 1699935031
Orthopaedic Surgery
Conflict of InterestDrug IndustryGift GivingHyaluronic AcidInjections, Intra-Articular

Practice Location

19475 W NORTH AVE
BROOKFIELD, WI 53045-4199

Phone: (262) 395-4141

What does JONATHON PRINTZ research?

Jonathon O Printz studies how the funding of medical research can affect the outcomes of treatments, specifically hyaluronic acid injections used for osteoarthritis in the knee. Osteoarthritis is a common condition that causes pain and stiffness in the joints, and hyaluronic acid injections are marketed as a way to relieve these symptoms. In his research, Printz investigates the reliability of studies that evaluate these injections and reveals how often the financial support from manufacturers influences what researchers report about their effectiveness.

Key findings

  • In a review of 48 studies, 62.5% were funded by companies that sell hyaluronic acid injections, while only 6.25% had no industry funding.
  • Studies funded by injection companies never reported negative results regarding the effectiveness of the injections.
  • 35% of independent studies (those without financial ties to injection companies) found that hyaluronic acid injections were no more effective than placebo (fake injections).

Frequently asked questions

Does Dr. Printz study treatments for knee arthritis?
Yes, he specifically studies hyaluronic acid injections used to treat osteoarthritis of the knee.
What has Dr. Printz found about the effectiveness of hyaluronic acid injections?
He has found that many studies funded by companies selling these injections report positive outcomes, while a significant number of independent studies show they may not be effective.
Is Dr. Printz's work relevant to patients considering knee injections?
Yes, his research highlights important information about the potential bias in studies that may influence patient decisions regarding knee injections.

Publications in plain English

Conflict of interest in the assessment of hyaluronic acid injections for osteoarthritis of the knee: an updated systematic review.

2013

The Journal of arthroplasty

Printz JO, Lee JJ, Knesek M, Urquhart AG

Plain English
Researchers looked at 48 studies testing hyaluronic acid injections for knee arthritis and checked who paid for them. They found that 62.5% were funded by the companies selling these injections, while only 6.25% had no industry money involved. Studies paid for by injection companies never reported negative results, but 35% of studies with no company ties found the injections worked no better than fake injections. This matters because it shows money influences what researchers conclude—companies funding studies are getting the results they want to see.

PubMed

Frequent Co-Authors

John J Lee Michael Knesek Andrew G Urquhart

Physician data sourced from the NPPES NPI Registry . Publication data from PubMed . Plain-English summaries generated by AI. Not medical advice.