Three-Dimensional Component Alignment and Functional Outcome in Computer-Navigated Total Knee Arthroplasty

Abstract Computer navigation in total knee arthroplasty produces better component alignment than conventional techniques. Different navigation systems exist. We undertook a prospective, randomized study comparing 2 navigations systems (Stryker Full Navigation and Stryker Articular Surface Mounted [A...

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Bibliographic Details
Published in:The Journal of arthroplasty 2011, Vol.26 (8), p.1285-1290
Main Authors: Harvie, Paul, BEng(Hons), MBChB, MRCS(Eng), FRCS(Tr & Orth), MD, Sloan, Karen, MSc, Beaver, Richard J., FRACS
Format: Article
Language:English
Subjects:
articular surface mounted
computer navigation
Orthopedics
Perth CT protocol
total knee arthroplasty
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Summary:Abstract Computer navigation in total knee arthroplasty produces better component alignment than conventional techniques. Different navigation systems exist. We undertook a prospective, randomized study comparing 2 navigations systems (Stryker Full Navigation and Stryker Articular Surface Mounted [ASM] navigation systems). Three-dimensional component alignment (Perth computed tomographic knee protocol) and function at 1 year (Knee Society Scores) were assessed. Forty patients participated (20 fully navigated and 20 ASM-navigated total knee arthroplasties). Cohorts were well matched according to sex, age, and body mass index. No statistically significant difference was seen in any parameter of 3-dimensional component alignment or function between cohorts. Operative time for the ASM cohort was significantly less than the fully navigated cohort ( P = .001). Both systems performed equally well, and therefore, surgeon preference should determine which system is used.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2010.12.022