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Could a daily protein shake boost recovery after hip or knee replacement?

NCT ID NCT04210284

Knowledge-focused Sponsor: NYU Langone Health 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study looks at whether drinking a protein shake (Ensure Max Protein) for two weeks before and four weeks after joint replacement surgery can improve nutrition levels in patients with osteoarthritis. Researchers will measure blood markers of nutrition at several points. The study involves 72 adults aged 55 to 95 who are scheduled for hip or knee replacement and have signs of poor nutrition.

What this could mean

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

Active substance
Ensure Max Protein Shake (dietary supplement)
What this could lead to
If successful, this could show that a simple nutritional drink helps patients recover better after joint replacement surgery.
What could go wrong
This is a small, early-stage study with only 72 participants, so results may not apply to everyone. The supplement may not significantly improve nutrition or recovery.

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 72 people

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

Started

Jul 2021

Expected to finish

Jun 2027

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

55 years and older

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: 1. Patient are current candidates for elective primary total hip and total knee arthroplasty 2. Patients ≥55 years of age but ≤ 95 3. Patients who meet at least one of the following three laboratory criteria for malnutrition: TSerum Albumin: ≤3.5 mg/dl Pre-Albumin: \<15 mg/dl Transferrin: \<200 mg/dl Exclusion Criteria: 1. Previous history of septic arthritis 2. Allergy to oral supplementation 3. Inability to consume oral supplementation 4. Protein malabsorption syndromes 5. Eating disorders 6. End stage renal and hepatic disease 7. Revision surgery, non-elective surgery, hemiarthroplasty, and unicompartmental knee arthroplasty

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Conditions

The condition(s) this trial relates to.

osteoarthritis

As listed by the trial registrant

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

Osteoarthritis

How to take part

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

  1. The places running it

    2 sites. 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

  • NYU Langone Health

    RECRUITING

    New York, New York, 10016, United States

  • Rothman Orthopedic Institute

    RECRUITING

    Philadelphia, Pennsylvania, 19107, United States

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