Comparative Study Between Patellar Denervation and Non-patellar Denervation in Total Knee Arthroplasty With Patellar Resurfacing

November 20, 2020 updated by: Satit Thiengwittayaporn, Navamindradhiraj University

Patellar Denervation in Total Knee Arthroplasty With Patellar Resurfacing to Relieve Postoperative Anterior Knee Pain: a Randomized Control Trial

The purpose of this study is to compare the post-operative anterior knee pain (AKP) between patellar denervation and non-patellar denervation in total knee arthroplasty with patellar resurfacing

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
241

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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
    • Bangkok,
      • Dusit, Bangkok,, Thailand, 10300
        • Navamindradhiraj 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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • ADULT
  • OLDER_ADULT
  • CHILD

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Primary osteoarthritis of knee who were scheduled for a primary total knee arthroplasty

Exclusion Criteria:

  • Valgus deformity
  • History of inflammatory arthroplathy
  • Previous fracture or open surgery on the same knee
  • History of patellar instability

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

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: TRIPLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
ACTIVE_COMPARATOR: Patellar denervation
Procedure: Total knee arthroplasty
A surgical procedure in which parts of the knee joint are replaced with artificial parts (prostheses)
Procedure: Patellar denervation
circumpatellar electrocautery with monopolar coagulation diathermy
EXPERIMENTAL: Non-patellar denervation
Procedure: Total knee arthroplasty
A surgical procedure in which parts of the knee joint are replaced with artificial parts (prostheses)

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change of post-operative anterior knee pain
Time Frame: Change from baseline Visual Analog Scale for anterior knee pain at 3 months, 6 months, and 12 months after surgery
Visual Analog Scale for anterior knee pain (minimum 0, maximum 10) Do higher values represent a worse outcome
Change from baseline Visual Analog Scale for anterior knee pain at 3 months, 6 months, and 12 months after surgery

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Knee Society and Knee Society function score
Time Frame: Change from baseline Knee Society and Knee Society function score at 3 months, 6 months, and 12 months after surgery
Knee Society and Knee Society function score (minimum 0, maximum 200)
Change from baseline Knee Society and Knee Society function score at 3 months, 6 months, and 12 months after surgery
Oxford knee score
Time Frame: Change from baseline Oxford knee score 3 months, 6 months, and 12 months after surgery
Oxford knee score (minimum 0, maximum 48)
Change from baseline Oxford knee score 3 months, 6 months, and 12 months after surgery
range of motion of knee
Time Frame: Change from baseline range of motion of knee at 3 months, 6 months, and 12 months after surgery
degree of motion of the knee after surgery
Change from baseline range of motion of knee at 3 months, 6 months, and 12 months after surgery
New patellar score (Bartlett score)
Time Frame: Change from baseline new patellar score at 3 months, 6 months, and 12 months after surgery
New patellar score or Bartlett score (minimum 0, maximum 30)
Change from baseline new patellar score at 3 months, 6 months, and 12 months after surgery
patellar shift index
Time Frame: Change from baseline 3 months, 6 months, and 12 months after surgery
The estimation of patellar position relative to the trochear
Change from baseline 3 months, 6 months, and 12 months after surgery
prevalence of anterior knee pain
Time Frame: Change from baseline prevalence of anterior knee pain at 3 months, 6 months, and 12 months after surgery
Percent of anterior knee pain
Change from baseline prevalence of anterior knee pain at 3 months, 6 months, and 12 months after surgery
activity of daily living
Time Frame: Change from baseline activity of daily living at 3 months, 6 months, and 12 months after surgery
activity of daily living score (minimum 0, maximum 20)
Change from baseline activity of daily living at 3 months, 6 months, and 12 months after surgery
post-operative complication
Time Frame: Number and type of post-operative complication at 3 months, 6 months, and 12 months after surgery
Number and type of post-operative complication
Number and type of post-operative complication at 3 months, 6 months, and 12 months after surgery

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Navamindradhiraj 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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 21, 2017

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 15, 2020

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 20, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 20, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 27, 2017

First Posted (ACTUAL)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 4, 2018

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 23, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 20, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2020

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • COA 147/2560

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

product manufactured in and exported from the U.S.

Yes

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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