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Bowlegs and knee surgery: does preoperative alignment change pain outcomes?

NCT ID NCT07720024

Disease control Sponsor: Thammasat University Source: ClinicalTrials.gov ↗

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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 22, 2026 · Last updated Jul 23, 2026 · Updated 1 time

Summary

This trial investigates whether people with knee osteoarthritis who also have a bowleg deformity (tibia vara) experience different pain relief after a partial knee replacement compared to those without the deformity. The study will measure medial knee pain using a standard pain scale in 150 adults over age 40 undergoing mobile-bearing unicompartmental knee arthroplasty. The goal is to understand if the same surgical technique works equally well for both groups.

What this could mean

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

Active substance
mobile-bearing unicompartmental knee arthroplasty (UKA) surgery
What this could lead to
If successful, this could help surgeons decide whether patients with bowleg deformities benefit as much from partial knee replacement as those without.
What could go wrong
This is a small, single-center study comparing two groups, not a randomized trial. Results may not apply to all patients or surgeons.

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

150 people

The number who actually took part.

Started

Jan 2021

Finished

Jan 2023

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 anteromedial knee OA who failed conservative treatment

Ages

40 to 80 years

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: * age \> 40 years old, ROM \> 75 degrees, FC\< 15 degrees, Varus deformity \< 20 degrees Exclusion Criteria: * ACL insufficiency, inflammatory arthritis, posttraumatic arthritis

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Conditions

The condition(s) this trial relates to.

Blount disease osteoarthritis osteoarthritis, knee

As listed by the trial registrant

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

Oa knee Oa knee pain Osteoarthritis

Contacts and locations

Locations

  • Thammsat University

    Pathum Thani, Changwat Pathum Thani, 12120, Thailand

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