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Description and error evaluation of an in vitro knee joint testing system.

Authors
  • Lewis, J L
  • Lew, W D
  • Schmidt, J
Type
Published Article
Journal
Journal of Biomechanical Engineering
Publisher
ASME International
Publication Date
Aug 01, 1988
Volume
110
Issue
3
Pages
238–248
Identifiers
PMID: 3172745
Source
Medline
License
Unknown

Abstract

An experimental system for the analysis of knee joint biomechanics is presented. The system provides for the simultaneous recording of ligament forces using buckle transducers and three-dimensional joint motion using an instrumented spatial linkage, as in vitro specimens are subjected to a variety of external loads by a pneumatic loading apparatus with associated force transducers. The system components are described, and results of an evaluation of system errors and accuracy are presented. The experimental setup has been successfully used in the analysis of normal knee ligament mechanics, as well as surgical reconstructions of the anterior cruciate ligament. The system can also be adapted to test other human or animal in vitro joints.

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