Preventing infections after joint replacement by understanding joint fluid and using ultrasound microbubbles
The joint environment and periprosthetic joint infection
This work looks at whether changes in joint fluid after hip or knee replacement make bacteria harder to kill and whether a gentle ultrasound-triggered microbubble method can help antibiotics work better for people with joint implants.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Thomas Jefferson University NIH-funded |
| Lab location | 1 site (Philadelphia, United States) |
| Project ID | NIH-11127709 on NIH RePORTER |
What this research studies
After joint surgery the fluid around the implant changes from a thin wound-like fluid to a thicker joint fluid, and this project studies how those changes affect bacteria, immune cells, and antibiotic activity. Researchers will compare wound-like fluid, synovial fluid, and serum to see how bacteria stick to implants and how well antibiotics kill them. They will also test an ultrasound-triggered microbubble technique to wake up bacterial metabolism so antibiotics can work more effectively. The team aims to identify an early postoperative “golden window” when infections are most likely to be cleared and to explore ways to extend that window.
Who could benefit from this research
Good fit: People undergoing or recently having hip or knee replacement surgery, especially those with early postoperative joint fluid or at higher risk for infection, would be the most relevant candidates.
Not a fit: People with long-established, chronic prosthetic joint infections that have already progressed despite treatment may be less likely to benefit directly from the approaches tested here.
Why it matters
Potential benefit: If successful, this could lower the chance of periprosthetic joint infections or make them easier to clear, which may reduce repeat surgeries and long-term complications.
How similar studies have performed: Ultrasound and microbubble methods have helped drug delivery in other medical areas, but applying them to prosthetic joint infections and timing them to an early postoperative window is a novel approach.
Where this research is happening
Philadelphia, United States
- Thomas Jefferson University — Philadelphia, United States (Active)
Researchers
- Principal investigator: Hickok, Noreen J — Thomas Jefferson University
- Study coordinator: Hickok, Noreen J
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.