Mechanical Properties and Internal Structure of Sacroiliac Joint

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  • 仙腸関節の力学的特性と内部構造
  • 仙腸関節の力学特性と内部構造
  • センチョウ カンセツ ノ リキガク トクセイ ト ナイブ コウゾウ

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The purpose of this study was to investigate the mechanical properties of the bony and cartilaginous element of the human sacroiliac joint. Dynamic stiffness and tan δ measured using viscoelastic spectrometer, and static test was performed with an Instron-type universal testing machine. Following results were obtained: 1) Dynamic stiffness and tan δ were larger for the iliac side than for the sacral side. 2) Cartilage thickness of the joint was correlated with dynamic stiffness. 3) The values of static compressive strength was larger for the iliac side than for the sacral side. 4) The stereological pattern analysis indicated that the structure of cancellous bone at the sacroiliac joint was highly load-adapted.

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