Comparison of Rotating vs. Fixed Platform of the COLUMBUS Knee Prosthesis

Rheumatoid Arthritis Clinical Trial

Official title: Clinical Outcome With Attention to Functional Results One Year After Fixed or Mobile Bearing Total Knee Replacement in a Randomized Controlled Trial

Status Completed

Clinical Trial Summary

A population of 100 patients randomised to rotating and fixed PE inlays in the Columbus knee prosthesis received a navigated TKR. Knee Society Score as primary endpoint, Oxford Score, and postoperative ROM after one year will be compared.

Clinical Trial Description

Mobile bearing tibial platform designs are advocated to improve functional results of total knee replacement (TKR), and to reduce wear in the longer term. This study investigates short term functional results with two patient groups who are systematically different in the fixed or mobile tibial bearing only.

Methods: 100 knees in 97 patients are stratified according to age and gender and randomized into two groups fixed bearing (FB) with 52 knees and mobile bearing (MB) with 48 knees. All receive the same posterior cruciate retaining implant but the tibial tray and bearing (B. Braun Aesculap Columbus CR and RP) by two experienced surgeons and follow an identical rehabilitation regime. Physical examinations are performed in a double-blinded manner before the operation and three, six and twelve months thereafter, using the Oxford and Knee Society scoring systems. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Arthritis, Rheumatoid
• Osteoarthritis
• Post-traumatic; Arthrosis
• Rheumatoid Arthritis

• NCT number: NCT00822640
• Study type: Interventional
• Source: Aesculap AG
• Status: Completed
• Phase: Phase 4
• Start date: March 2004
• Completion date: July 2008