By InvitationPhase 4

Efficacy and Safety of Intraosseous Antibiotic Prophylaxis in Total Hip Replacement

United States25 participantsStarted 2025-10-20

Plain-language summary

The goal of this clinical trial is to learn if intraosseous antibiotic (cefazolin) administration can improve antibiotic levels in adults undergoing primary total hip replacement. The main question it aims to answer is: • Does intraosseous cefazolin increase antibiotic concentrations in blood and tissue compared with standard intravenous cefazolin alone? Researchers will compare patients receiving intraosseous cefazolin plus standard intravenous cefazolin to those receiving placebo injection plus standard intravenous cefazolin to see if local antibiotic delivery improves outcomes. Participants will: * Receive standard intravenous cefazolin before surgery and either intraosseous cefazolin or placebo * Provide blood samples before and after antibiotic administration * Have small tissue samples collected during surgery * Complete routine postoperative follow-up and outcome assessment for 90 days

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Age ≥ 18 years * Scheduled to undergo primary total hip arthroplasty * Receiving standard institutional antibiotic prophylaxis with IV bolus cefazolin prior to surgery Exclusion Criteria: * Reduced renal function (GFR \< 30) * Reduced liver function (AST/ALT \> 3× upper limit of normal) * Weight \> 120 kg * Undergoing bilateral total hip arthroplasty * Documented cefazolin anaphylaxis * Active joint infection * History of diabetes * Inflammatory arthropathies * Inability to understand written and/or spoken English * Undergoing revision total hip arthroplasty

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Cefazolin Concentration

Timeframe: From administration of intra-osseous ancef to 4 hours post-operatively

Trial details

NCT IDNCT07549542

SponsorRutgers, The State University of New Jersey

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2026-10

View on ClinicalTrials.gov More Antibiotic Prophylaxis Surgery trials