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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

01-08-2007 | Knee

Development of a simple device for measurement of rotational knee laxity

Authors: Volker Musahl, Kevin M. Bell, Andrew G. Tsai, Ryan S. Costic, Robert Allaire, Thore Zantop, James J. Irrgang, Freddie H. Fu

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 8/2007

Abstract

The goal of this study was to develop a new device for the measurement of rotational knee laxity and to measure intra-observer and inter-observer reliability in a cadaveric study. An array of established tools was utilized to design the device with a basis that consists of an Aircast Foam Walker™ boot. A load cell was attached to the boot with a handle bar for application of moments about the knee. An electromagnetic tracking system was used to record the motion of the tibia with respect to the femur. The total arc of motion ranged from 23° at full extension to 46° at 90° of knee flexion. The intra-tester ICCs ranged from 0.94 to 0.99. The ICC for inter-tester reliability ranged from 0.95 to 0.99. In summary, the new device for measurement of rotational knee laxity is simple, reliable, and can be used in a non-invasive fashion in the office or surgical suite document clinical outcome in terms of rotational knee laxity.

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Title: Development of a simple device for measurement of rotational knee laxity
Authors: Volker Musahl
Kevin M. Bell
Andrew G. Tsai
Ryan S. Costic
Robert Allaire
Thore Zantop
James J. Irrgang
Freddie H. Fu
Publication date: 01-08-2007
Publisher: Springer-Verlag
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 8/2007
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-007-0317-9

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Development of a simple device for measurement of rotational knee laxity

Abstract

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