Comparison of a Metal Backed Fixed-Bearing Tibial Baseplate and an All-Polyethylene Tibia in Total Knee Arthroplasty
Public ClinicalTrials.gov record NCT00979147. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Randomized Prospective Level 1 Comparison of a Modular Polished Fixed-Bearing Tibial Baseplate and an All-Polyethylene Tibia in Total Knee Arthroplasty
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study is designed to compare prospectively, in a randomized Level 1 evidence fashion, the clinical, functional, and radiographic results of a modular polished tibial (MPT) tray with a moderately cross-linked polyethylene (XLK) insert to an all-polyethylene tibial (APT) design with GVF polyethylene. Comparing these two designs will afford us information in the following areas: 1. Does a MPT/XLK design have improved wear characteristics over a nonmodular APT/GVF design? 2. Is there a clear clinical advantage to the MPT/XLK design in certain patient populations that justify its use over the APT/GVF design? Answering these questions will allow surgeons to use both designs appropriately in different demand populations. This study is designed to address the questions of whether an MPT/XLK design offers improvement in wear characteristics, Knee Society scores, KOOS, WOMAC, SF-36, or radiographic measures, over an APT design. The investigator's primary hypothesis is that there will be no difference in these outcome measures at a minimum two year follow-up. A secondary hypothesis based on the long-term follow-up of this group, up to twenty years, is that there will be no difference in implant survival.
Study identification
- NCT ID
- NCT00979147
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 400 participants
Conditions and interventions
Conditions
Interventions
- TKA surgery with modular polished tibial baseplate/XLK design Procedure
- TKA surgery with the nonmodular APT/GVF design Procedure
- P.F.C.® Sigma Knee System Device
Procedure · Device
Eligibility (public fields only)
- Age range
- 60 Years to 85 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 31, 2007
- Primary completion
- Apr 30, 2013
- Completion
- Oct 31, 2013
- Last update posted
- Sep 6, 2020
2007 – 2013
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Minneapolis VAMC | Minneapolis | Minnesota | 55417 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00979147, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 6, 2020 · Synced Sep 11, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00979147 live on ClinicalTrials.gov.