Hip surgery may reshape your knee, study finds
NCT ID NCT07597538
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.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 500 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Aug 2028
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.
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
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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Department of orthopedic surgery faculty of medicine assiut university
RECRUITINGAsyut, Asyut Governorate, 71515, Egypt