Hip surgery may reshape your knee, study finds

NCT ID NCT07597538

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how total hip replacement changes the alignment of the knee. Researchers will take full-leg X-rays of 500 patients before and after hip surgery to measure any shifts in knee position. The goal is simply to observe and describe these changes, not to test a new treatment.

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.

Participants

About 500 people

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

Started

Feb 2026

Expected to finish

Aug 2028

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.

Who is studied

the study population will include any patient undergoing primary unilateral total hip arthroplasty for hip joint pathology .patient will be recruited consecutively from the orthopedic surgery department . all eligible patients will be assessed preoperatively and followed postoperatively with full length lower limb radiographs to evaluate changes in knee phenotype and coronal alignment

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * patients scheduled for primary unilateral total hip arthroplasty * patient with hip joint pathology indicated for THA ( osteoarthritis ) * ability to provide informed consent * availability for pre and post- operative radiographic follow-up Exclusion Criteria: * refusal to participate or withdraw consent * incomplete radiographic data or loss to follow up * previous surgery on the ipsilateral hip or knee * patients with neuromuscular disorders affecting alignment

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As listed by the trial registrant

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How to take part

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  1. The places running it

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  2. The official record

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  3. A doctor treating you

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Contacts and locations

Locations

  • Department of orthopedic surgery faculty of medicine assiut university

    RECRUITING

    Asyut, Asyut Governorate, 71515, Egypt