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Fasting before hip surgery may cut infection risk, new trial hopes to prove

NCT ID NCT07651462

Disease control Sponsor: Charite University, Berlin, Germany Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether a 20-day fasting schedule before hip replacement surgery can reduce complications like infections. 130 adults will either follow the fasting plan or receive standard care. Researchers will measure changes in gut bacteria and immune markers to see if fasting helps the body heal better.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Buchinger Fastenbox and intermittent fasting
What this could lead to
If it works, this could point toward a simple, low-cost way to lower infection and other risks before hip replacement surgery.
What could go wrong
This is a small, early-stage trial with only 130 people. The fasting plan may be hard to follow, and it is not yet known if it truly reduces complications.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 130 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2025

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 75 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Adults aged 18-75 years (inclusive) * Scheduled for elective primary total hip arthroplasty (THA) * Able and willing to provide written informed consent * Able to follow the 20-day preoperative fasting protocol independently at home (if randomized to the fasting arm) or willing to be randomized to either arm Exclusion Criteria: * Resorption disorder due to bowel disease (e.g. inflammatory bowel disease, short-bowel syndrome, active celiac disease) * Antibiotic therapy within the last 2 months before baseline (T0) * Probiotic, prebiotic, or symbiotic supplementation within the last 2 months before baseline (T0) * Inability or unwillingness to provide informed consent * Severe comorbidity precluding fasting (e.g. ASA ≥ IV, advanced renal/hepatic impairment, eating disorder) * BMI \< 18.5 kg/m² (underweight) * Concurrent participation in another interventional drug or device trial * Pregnancy or breastfeeding

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Conditions

The condition(s) this trial relates to.

Intermittent Fasting metabolic syndrome X osteoarthritis, hip Postoperative Complications Surgical Wound Infection

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Arthroplasty, replacement, hip Gastrointestinal microbiome Hip osteoarthritis Postoperative complications Surgical wound infection

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Centrum für Muskuloskeletale Chirurgie (CMSC), Charité - Universitätsmedizin Berlin

    RECRUITING

    Berlin, State of Berlin, 10117, Germany

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