Technical Paper
Shearing and Bending Effects at the Knee Joint at High Speed Lateral Loading
1997-11-12
973326
The main objective of this study is to determine the damage tolerance and to describe the damage mechanisms of the extended human knee when it is exposed to lateral impact loads in pedestrian accidents, particularly those that occur at high velocity. An experimental method for assessing the damage tolerance of the knee region to loads acting at the extended lower extremity was developed. In-Vitro experiments with human subjects were conducted where only the purest possible shearing deformation or the purest possible bending deformation affected the knee region at the time. Ten experiments at a velocity level of 40 km/h were performed in a shearing and a bending setup, respectively. The peak values of the shearing force and the bending moment related to the damage of knee ligaments and bone fractures were calculated at knee joint level. Damages were assessed by dissecting the lower extremity.