Comparison of Medial Knee Pain Between Patients With and Without Preoperative Tibia Vara Underging Mobile-bearing Unicompartmental Knee Arthroplasty (bow leg)

July 17, 2026 updated by: Boonchana Pongcharoen, Thammasat University

Comparison of Clinical Outcomes Between Patients With and Without Preoperative Tibia Vara Underging Mobile-bearing Unicompartmental Knee Arthroplasty

to compared VAS for medial knee pain between oa knee with or without tibia vara following mobile bearing UKA

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The medial knee pain after UKA showed high rate. but mobile bearing UKA show less tibial bobe cut and the mobile bearing can distribute load. Therefore, the oa knee with and without tibia vara should show similar VAS for medial knee pain.

Study Type

Observational

Enrollment (Actual)

150

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Thailand
    • Changwat Pathum Thani
      • Pathum Thani, Changwat Pathum Thani, Thailand, 12120
        • Thammsat University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

the anteromedial knee OA who failed conservative treatment

Description

Inclusion Criteria:

  • age > 40 years old, ROM > 75 degrees, FC< 15 degrees, Varus deformity < 20 degrees

Exclusion Criteria:

  • ACL insufficiency, inflammatory arthritis, posttraumatic arthritis

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
medial knee OA with tibia vara
tibia vara is the mechanical alignment of tibia deviate > 3 degrees
Procedure: mobile bearing UKA
underwent mobile bearing UKA with standard surgical technique
media knee OA without tibia vara
underwent mobile bearing UKA
Procedure: mobile bearing UKA
underwent mobile bearing UKA with standard surgical technique

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
VAS for medial knee pain
Time Frame: 6 weeks to 2 years
0-10 points
6 weeks to 2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Thammasat University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2021

Primary Completion (Actual)

January 1, 2021

Study Completion (Actual)

January 1, 2023

Study Registration Dates

First Submitted

July 17, 2026

First Submitted That Met QC Criteria

July 17, 2026

First Posted (Actual)

July 22, 2026

Study Record Updates

Last Update Posted (Actual)

July 22, 2026

Last Update Submitted That Met QC Criteria

July 17, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MTU-EC-OT-0-237/64
  • 237/64 (Other Identifier: Thammasat University)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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