OA Kneebow legNCT07720024
Comparison of Medial Knee Pain Between Patients With and Without Preoperative Tibia Vara Underging Mobile-bearing Unicompartmental Knee Arthroplasty
An observational study of OA Knee and OA Knee Pain, run by Thammasat University at 1 site in Thailand.
Trial summary
to compared VAS for medial knee pain between oa knee with or without tibia vara following mobile bearing UKA Read more about this study
- Who is it for?
- Ages 40 to 80 years
- Conditions the study is for
- OA Knee, OA Knee Pain, Osteoarthritis
- What is being tested?
- mobile bearing UKA
- Type of treatment
- Surgery or procedure
- How many people
- 150 participants
- Where
- 1 siteThailand
- Study dates
- 1 Jan 2021to 1 Jan 2023
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: the anteromedial knee OA who failed conservative treatment
Who may be able to join
- age > 40 years old, ROM > 75 degrees, FC< 15 degrees, Varus deformity < 20 degrees
Who cannot join
- ACL insufficiency, inflammatory arthritis, posttraumatic arthritis
Trial locations and contacts
1 site in 1 country.
Thailand1 site
Thammsat University
Pathum Thani, Changwat Pathum Thani, 12120
About this study
Official title: 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
Read the 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.
- Conditions
- OA Knee, OA Knee Pain, Osteoarthritis
- Being tested
- mobile bearing UKA
- Keywords
- unicompartmental knee arthroplasty, medial knee pain, mobile bearing, tibia vara, extra-articular deformity
- Medical subject headings
- Osteoarthritis, Knee, Osteoarthritis, Blount disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
mobile bearing UKAProcedure or surgery
underwent mobile bearing UKA with standard surgical technique
| Study group | Role | What they receive |
|---|---|---|
| medial knee OA with tibia vara | tibia vara is the mechanical alignment of tibia deviate > 3 degrees Receives: Procedure: mobile bearing UKA | |
| media knee OA without tibia vara | underwent mobile bearing UKA Receives: Procedure: mobile bearing UKA |
What is being measured
The primary outcome is the main question the study is designed to answer.
VAS for medial knee pain
0-10 points
Measured: 6 weeks to 2 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Jul 2026
- Study start1 Jan 2021
- Primary completion1 Jan 2021
- Study completion1 Jan 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for OA KneeStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 150 participants (actual)
Sponsor and investigators
- Lead sponsor
- Thammasat University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Boonchana Pongcharoen, Thammasat University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07720024
- Sponsor's protocol ID
- MTU-EC-OT-0-237/64
- Other IDs
- 237/64
- Acronym
- bow leg
- Status last verified
- Jul 2026
- First submitted
- 17 Jul 2026
- Last updated
- 22 Jul 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 22 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of Clinical Outcomes Between Patients With and Without Preoperative Tibia Vara Underging Mobile-bearing Unicompartmental Knee Arthroplasty
- ClinicalTrials.gov ID
- NCT07720024
- Acronym / sponsor ID
- bow leg / MTU-EC-OT-0-237/64
- Conditions
- OA Knee, OA Knee Pain, Osteoarthritis
- Keywords
- unicompartmental knee arthroplasty, medial knee pain, mobile bearing, tibia vara, extra-articular deformity
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 150 participants (actual)
- Lead sponsor
- Thammasat UniversityUniversity, hospital or other
- Study start
- 1 Jan 2021 (actual)
- Primary completion
- 1 Jan 2021 (actual)
- Study completion
- 1 Jan 2023 (actual)
- First posted
- 22 Jul 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
to compared VAS for medial knee pain between oa knee with or without tibia vara following mobile bearing UKA
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 design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| medial knee OA with tibia vara | – | Procedure: mobile bearing UKAtibia vara is the mechanical alignment of tibia deviate > 3 degrees |
| media knee OA without tibia vara | – | Procedure: mobile bearing UKAunderwent mobile bearing UKA |
Who may qualify
- Ages
- 40 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- the anteromedial knee OA who failed conservative treatment
Key inclusion criteria (1 listed)
- age > 40 years old, ROM > 75 degrees, FC< 15 degrees, Varus deformity < 20 degrees
Key exclusion criteria (1 listed)
- ACL insufficiency, inflammatory arthritis, posttraumatic arthritis
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| mobile bearing UKAunderwent mobile bearing UKA with standard surgical technique | Procedure or surgery | media knee OA without tibia vara, medial knee OA with tibia vara |
Primary outcome
VAS for medial knee pain
Time frame: 6 weeks to 2 years
0-10 points
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Jul 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of OA Knee and OA Knee Pain, run by Thammasat University at 1 site in Thailand.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 22 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Thailand. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
VAS for medial knee pain (time frame: 6 weeks to 2 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Jul 2026.