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Tibial Insert Micromotion of Various Total Knee Arthroplasty Devices

Content Provider	Scilit
Author	Bhimji, Safia Wang, Aiguo Schmalzried, Thomas
Copyright Year	2010
Description	The objective of this study was to develop a novel method to quantify rotational micromotion of modular tibial components that incorporates physiologic loading conditions, a physiologic test environment, and constraint characteristics of the articulating surface. The methodology is reviewed and data are presented on four total knee designs. Results showed the design with a rotational stabilizing island to demonstrate the most capability in resisting rotational micromotion for a given reacted torque, followed by a full peripheral capture device, then a partial peripheral capture device, and then a full peripheral capture device with a posterior lipped edge. Under walking and stair-climbing loads, the full peripheral capture device imparts more torque to the insert than the other designs due to the higher constraint of its articulating surface and thus experiences the most micromotion. The rotational stabilizing island device reveals the least amount of motion, due to a combination of its locking mechanism and a less constrained articular surface.
Related Links	http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0030-1268696.pdf
Ending Page	162
Page Count	10
Starting Page	153
ISSN	15388506
e-ISSN	19382480
DOI	10.1055/s-0030-1268696
Journal	The Journal of Knee Surgery
Issue Number	03
Volume Number	23
Language	English
Publisher	Georg Thieme Verlag KG
Publisher Date	2010-12-06
Access Restriction	Open
Subject Keyword	Journal: The Journal of Knee Surgery Keywordstibial Insert Micromotion Total Knee Arthroplasty Backside Wear
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Surgery

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