NCT00839020

Minimally Invasive Versus Conventional Approaches in Navigated Total Knee Arthroplasty (TKA)

Comparison of a Minimally Invasive and a Conventional Approach in Computer Assisted Total Knee Arthroplasty.

• Status: Terminated
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 26 (actual)
• Sponsor: Aesculap AG · Industry
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

50 patients are randomized to two groups who receive a navigated knee prosthesis. Aim of the study is a comparison between a minimally invasive and a conventional approach. In both groups OrthoPilot computer assisted-navigation will be used. Pain intensity as well as concomitant pain medication are monitored during the first 20 postoperative days and will be compared for the two groups. Various scores are surveyed.

Detailed description

Accuracy of implant positioning and reconstruction of the mechanical leg axis are major requirements for achieving good long-term results in total knee arthroplasty (TKA). A minimally invasive approach might compromise the accuracy due to lacking intraoperative oversight. The purpose of this study is to compare a minimally invasive TKA approach that was performed under control of a navigation system with a standard navigated approach, with respect to patient pain and range of motion. All patients receive a Columbus knee prosthesis and in both groups an OrthoPilot navigation system is used to control the alignment. Pain intensity using the Visual Analogue Scale (VAS) and concomitant pain medication intake are documented daily during the first 20 days after operation. As long as the patient is hospitalized the Range of Motion will also be documented daily. Knee society score, oxford score, as well as the WOMAC score are monitored pre- and postoperatively.

Conditions

• Osteoarthritis
• Rheumatoid Arthritis
• Post-traumatic Arthritis

Interventions

Type	Name	Description
PROCEDURE	Navigated TKA with a minimally invasive approach	Navigated total knee arthroplasty with a minimally invasive approach
PROCEDURE	Navigated TKA with a conventional approach	A navigated total knee arthroplasty is performed using the Orthopilot navigation system. A conventional approach is performed

Timeline

• Start date: 2007-11-01
• Primary completion: 2012-07-01
• Completion: 2013-01-01
• First posted: 2009-02-09
• Last updated: 2016-07-26

Locations

1 site across 1 country: Germany