1362 膝蓋骨-膝蓋腱-脛骨結節複合体の動的挙動

概要

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Attenuation of impact load through patella-patellar tendon-tibial tuberosity (PTT) complex with respect to the progress of ossification of growing cartilage in tibial tuberosity has been studied. Materials used in this study were PTT complexes and patellar tendons taken from porcine hind legs with three different stages of ossification of tibial tuberosity. Impact tensile tests on PTT complexes and patellar tendons were performed at room temperature using the split-Hopkinson pressure bar technique. The experimental load transmission ratio of PTT complexes increased with an increase of pretension, ndependent of ossification. Highly ossified specimen showed lower load transmission ratio. Significant change in Young's modulus of patellar tendon with an increase of pretensionas well as the progress of ossification was not found. Impact response analyses were also performed for the prediction of load transmission ratio as well as the section subjected to maximum strain in PTT complexes based on the one-dimensional wave propagation theory. The results obtained from the dynamic analyses well corresponded to the location of injuries in different stages of growing process, while static analyses could not predict such clinical situation.
社団法人日本機械学会の論文
2000-07-31