BELOW KNEE IMPACT RESPONSES USING CADAVERIC SPECIMENS

Work undertaken to evaluate risk of injury to the posterior cruciate ligament (PCL) has been based on a study available in the literature (Viano et al., 1978) in which only two of the five knees tested had PCL ruptures. The goals of the current study were to repeat the study with a higher number of samples, evaluate the adequacy of the experimental setup for the identification of a PCL tolerance, and study the effects of other soft tissues on knee response. Fourteen knees were tested utilizing a high-speed materials testing machine. Three were PCL-only knees (patella and all the muscular and ligamentous structures other than the PCL removed), eight were intact knees (with the patella and all the muscular and ligamentous structures), and three were PCL-only knees with the tibia protected from bending fracture. Both this study and the one undertaken by Viano et al. suggest that the existence of the soft tissues other than the PCL affect the injury outcome, and that the intact knee would suffer predominantly tibial metaphyseal fractures possible due to bending. Consequently, it is concluded that the current setup can produce isolated PCL injuries but the data available are inadequate to characterize PCL tolerance. These studies are important because knee injuries represent about 10% of all injuries suffered during automobile accidents.

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  • English

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  • Accession Number: 00988803
  • Record Type: Publication
  • ISBN: 0768014468
  • Report/Paper Numbers: 2004-22-0004
  • Files: TRIS
  • Created Date: Apr 10 2005 12:00AM