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Comparing Fixed-bearing Versus Mobile-bearing Prosthesis in Total Knee Arthroplasty: A Prospective Randomized Trial

Study of Prosthesis in Total Knee Arthroplasty

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01312532
Enrollment
100
Registered
2011-03-10
Start date
2004-06-30
Completion date
2010-11-30
Last updated
2011-03-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osteoarthritis

Keywords

Total knee arthroplasty, Fixed-bearing, Mobile-bearing

Brief summary

The purpose of this study is to determine which prosthesis is better in total knee arthroplasty

Detailed description

Theoretical advantages of mobile-bearing devices led surgeons to use these prostheses instead of fixed-bearing devices as traditional implants. This study was designed to compare Fixed-bearing versus Mobile-bearing Prosthesis in Total Knee Arthroplasty through a five-year follow-up.

Interventions

DEVICEfixed-bearing (P.F.C.® Sigma)

P.F.C.® Sigma, DePuy, Johnson & Johnson, Leeds, UK

DEVICEmobile-bearing (P.F.C.® Sigma)

P.F.C.® Sigma, DePuy, Johnson & Johnson, Leeds, UK

Sponsors

Isfahan University of Medical Sciences
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Healthy volunteers
Yes

Inclusion criteria

* Patients with expected primary total knee arthroplasty

Exclusion criteria

* Mediolateral instability * Infective arthritis * Severe deformity * Revision

Design outcomes

Primary

MeasureTime frameDescription
Knee Society Scoringfive years after surgerywas used for evaluating the function of the knee and high scores indicated better knee function

Secondary

MeasureTime frameDescription
Painfive years after surgeryPain was evaluated with a Visual Analogue Scale (VAS) with scores ranging from zero to 10ten (0 for no pain and 10 for intolerable pain).

Countries

Iran

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026