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Surgery or strength? new study pits hip replacement against exercise for arthritis pain

NCT ID NCT04070027

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Aug 21, 2026 · Updated 2 times

Summary

This study compares two treatments for end-stage hip osteoarthritis: total hip replacement surgery and progressive resistance training (strength exercises). About 109 adults aged 50 and older with severe hip arthritis will be randomly assigned to one of the two treatments. The main goal is to see which approach better improves hip function and reduces pain after 6 months.

What this could mean

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

Active substance
Total hip replacement surgery or progressive resistance training (strength exercises)
What this could lead to
If successful, this could show that strength training is a viable alternative to surgery for some patients with severe hip arthritis, avoiding the need for an operation.
What could go wrong
This is a relatively small trial (109 people) and results may not apply to everyone. Surgery carries risks like infection or blood clots, while exercise may not provide enough relief for end-stage disease.

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

109 people

The number who actually took part.

Started

Sep 2019

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

50 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. Adults aged ≥50 years 2. Clinical history and symptoms consistent with primary hip osteoarthritis (including hip osteoarthritis due to mild hip dysplasia that may be treated with standard components) and radiographic verified hip osteoarthritis defined as joint space narrowing \<2 mm 3. Considered eligible for total hip arthroplasty by an orthopaedic surgeon (i.e. duration of symptoms \>3 months, hip related pain, functional impairment or decreased range of motion (ROM), and attempted treatment with analgesics) Exclusion Criteria: 1. Severe walking deficits (dependency of two crutches or walker) 2. Body Mass Index \>35 kg/m2 3. Lower extremity fractures within one-year prior to inclusion 4. Planned other lower extremity surgery within six months 5. Cancer diagnosis and receiving chemo-, immuno- or radiotherapy 6. Neurological diseases (e.g. previous stroke, multiple sclerosis, Parkinson's, Alzheimer's). 7. Other reasons for exclusion (i.e. inadequacy in written and spoken Danish, mentally unable to participate, physically unable to comply with the PRT protocol due to comorbidity (e.g. severe heart disease, previous major lower extremity surgery within six-months) etc.).

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Conditions

The condition(s) this trial relates to.

Motor Activity osteoarthritis, hip

As listed by the trial registrant

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

Contacts and locations

Locations

  • Department of Orthopaedic Surgery and Traumatology, Odense University Hospital (OUH)

    Odense, 5000, Denmark

  • Department of Orthopaedic Surgery, Aarhus University Hospital (AUH)

    Aarhus, 8200, Denmark

  • Department of Orthopaedic Surgery, Naestved Hospital

    Næstved, 4700, Denmark

  • Depatment of Orthopaedic Surgery, Vejle Hospital

    Vejle, 7100, Denmark

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