Surgery or strength? new study pits hip replacement against exercise for arthritis pain
NCT ID NCT04070027
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
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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
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109 people
The number who actually took part.
- Started
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Sep 2019
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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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
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50 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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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.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Department of Orthopaedic Surgery and Traumatology, Odense University Hospital (OUH)
Odense, 5000, Denmark
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Department of Orthopaedic Surgery, Aarhus University Hospital (AUH)
Aarhus, 8200, Denmark
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Department of Orthopaedic Surgery, Naestved Hospital
Næstved, 4700, Denmark
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Depatment of Orthopaedic Surgery, Vejle Hospital
Vejle, 7100, Denmark
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