J Knee Surg 2013; 26(05): 357-362
DOI: 10.1055/s-0033-1341581
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Computer-Assisted Navigation in Knee Arthroplasty: A Critical Appraisal

Muralidharan Venkatesan
1   Department of Trauma and Orthopaedics, Leicester General Hospital, University Hospitals of Leicester, Leicester, United Kingdom
Devendra Mahadevan
1   Department of Trauma and Orthopaedics, Leicester General Hospital, University Hospitals of Leicester, Leicester, United Kingdom
Robert U. Ashford
1   Department of Trauma and Orthopaedics, Leicester General Hospital, University Hospitals of Leicester, Leicester, United Kingdom
› Author Affiliations
Further Information

Publication History

16 September 2012

13 January 2013

Publication Date:
19 March 2013 (online)


The purpose of this review was to appraise the use of computer-assisted navigation in total knee arthroplasty and to assess whether this technology has improved clinical outcomes. Studies were identified through searches in MEDLINE, Embase, and PubMed. Numerous studies have shown improved leg and component alignment using navigation systems. However, the better alignment achieved in navigated knee arthroplasty has not been shown to lead to better clinical outcomes. Navigated knee arthroplasty had lower calculated blood loss and lower incidence of fat embolism compared with conventional knee arthroplasty using intramedullary jigs. It may be most valued when dealing with complex knee deformities, revision surgery, or minimally invasive surgery. Navigated knee arthroplasty, however, is only cost-effective in centers with a high volume of joint replacements. Overall, computer-assisted navigated knee arthroplasty provides some advantages over conventional surgery, but its clinical benefits to date are unclear and remain to be defined on a larger scale.

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