- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05435092
Clinical Correlation of TKA Alignment and Native Knee Anatomy (CAT)
February 15, 2024 updated by: University Hospital, Basel, Switzerland
Influence of Native Knee Anatomy on Alignment and Outcome After Total Knee Arthroplasty CAT - Clinical Correlation of TKA Alignment and Native Knee Alignment
Total knee arthroplasty (TKA) is still considered the treatment of choice for painful osteoarthritis.
In the last decades neutral mechanical knee alignment in the coronal plane has been considered the gold standard.
However, the optimal TKA alignment is still debated.
Today, component rotation measurements on three-dimensional (3D) reconstructed computed tomography (CT) images are considered the gold standard for assessing native preoperative alignment and TKA component position.
In this study pre-and postoperative radiographic measurements, functional scores, and biomechanical parameters of patients with knee osteoarthritis will be assessed with the aim to investigate the relationship between deviations of TKA alignment from native preoperative alignment and clinical, functional and biomechanical alignment.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Detailed Description
Total knee arthroplasty (TKA) is still considered the treatment of choice for painful osteoarthritis resulting in pain and functional improvement.
Despite the development of novel prosthetic design and improved outcome, about 20% of patients report persisting pain interfering with their daily activities.Total knee prostheses are aligned in the coronal, sagittal and axial planes during implantation.
In the last decades, neutral mechanical knee alignment in the coronal plane has been considered the gold standard.
The aim of mechanical alignment in TKA is to achieve a femorotibial joint line that is perpendicular to the mechanical axis of the long leg axis hence correcting any varus-valgus deformity via prosthesis placement with the goal of equally distributing the load between the medial and lateral prosthesis component.
However, the optimal TKA alignment is still debated.
Traditionally, knee alignment and total knee arthroplasty component position have been assessed using radiographs.
However, this method has a low accuracy and reliability because of variation in limb rotation, knee extension deficit, patient positioning, or magnification factors.
Component rotation measurements on three-dimensional (3D) reconstructed computed tomography (CT) images have replaced former methods and are now considered the gold standard for assessing native preoperative alignment and TKA component position.
In this study pre-and postoperative radiographic measurements, functional scores, and biomechanical parameters of patients with knee osteoarthritis will be assessed with the aim to investigate the relationship between deviations of TKA alignment from native preoperative alignment and clinical, functional and biomechanical alignment.
Study Type
Observational
Enrollment (Estimated)
120
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Yves Acklin, PD Dr. med.
- Phone Number: +41 61 315 27 71
- Email: yves.acklin@usb.ch
Study Contact Backup
- Name: Matthias Wittauer, Dr. med.
- Phone Number: +41 61 315 27 44
- Email: matthias.wittauer@usb.ch
Study Locations
-
-
Basel Stadt
-
Basel, Basel Stadt, Switzerland, 4052
- Recruiting
- University Hospital Basel
-
Contact:
- Yves Acklin, PD.Dr.med.
- Phone Number: +41 61 315 27 71
- Email: yves.acklin@usb.ch
-
Contact:
- Matthias Wittauer, Dr.med
- Phone Number: +41 61 315 27 44
- Email: matthias.wittauer@usb.ch
-
-
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
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
N/A
Sampling Method
Non-Probability Sample
Study Population
Patients with knee osteoarthritis who are scheduled for a primary total knee arthroplasty
Description
Inclusion Criteria:
- Age > 18 years
- Diagnosed osteoarthritis of the knee
- Planned primary total knee arthroplasty (cruciate retaining (CR) or posterior stabilizing (PS) designs)
Exclusion Criteria:
- Inability to provide informed consent
- Inability to communicate in German, French, Italian or English
- Any previous ipsilateral bony knee procedure prior to TKA
- Planned partial knee arthroplasty, semi- or full-constrained knee prosthesis
- Patients unlikely to attend clinical follow-up (e.g., when living abroad)
- Pregnancy
- Female participants of childbearing potential, not using a medically reliable method of contraception, who do not wish to undergo a pregnancy test prior to exposure to i ionizing radiation
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
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Patients scheduled for primary TKA
Adult Patients diagnosed with osteoarthritis of the knee and who are scheduled for a primary total knee arthroplasty
|
Three dimensional CT (3D CT):Method of surface rendition of anatomy by means of a special computer software to capture 3D bone models used to improve the outcomes of Total Knee Arthroplasty (TKA).
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Deviation of TKA alignment from preoperative native knee alignment in the coronal plane
Time Frame: 3 months
|
Primary radiographic endpoints to assess alignment deviations in the coronal plane:
|
3 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Evaluation of the Sagittal alignment
Time Frame: 3 months
|
Evaluation of the
|
3 months
|
Evaluation of the Axial alignment
Time Frame: 3 months
|
Evaluation of the
|
3 months
|
Assessment of Clinical, functional and biomechanical parameters
Time Frame: 2 years
|
Functional scores:
Biomechanical parameters:
Local adverse events: persistent or worsening pain; infection; any local event |
2 years
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Deviation of preoperative native knee alignment from neutral alignment in the coronal plane
Time Frame: 3 months
|
Primary radiographic endpoints to assess alignment deviations in the coronal plane:
|
3 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Study Director: Andreas M. Müller, Prof.Dr.med., University Hospital of Basel
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)
April 1, 2022
Primary Completion (Estimated)
May 1, 2024
Study Completion (Estimated)
May 1, 2026
Study Registration Dates
First Submitted
June 15, 2022
First Submitted That Met QC Criteria
June 22, 2022
First Posted (Actual)
June 28, 2022
Study Record Updates
Last Update Posted (Actual)
February 16, 2024
Last Update Submitted That Met QC Criteria
February 15, 2024
Last Verified
February 1, 2024
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- 2022-00084; mu22Mueller
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
UNDECIDED
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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