Study on Three-Dimensional Microarrangement of the Fibrous Matrix of the Compact Bone Lamellae

  • EGAWA Kaoru
    The First Department of Oral Anatomy, Showa University School of Dentistry
  • NONAKA Naoko
    The First Department of Oral Anatomy, Showa University School of Dentistry
  • HOSHINO Mutsuyo
    The First Department of Oral Anatomy, Showa University School of Dentistry
  • TAKANO Makoto
    The First Department of Oral Anatomy, Showa University School of Dentistry
  • TAKIGUCHI Reiji
    The First Department of Oral Anatomy, Showa University School of Dentistry

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  • 緻密骨層板の線維性基質の立体微細構築に関する研究

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For the purpose to study the relationship between the stress to the bone and the arrangement of the bone lamellae and matrix fibers of the compact bone, we examined the arrangement of matrix fibers of tibiae dissected from male cadavers for anatomy with a high-resolution scanning electron microscope.<BR>On the medial and lateral surface of Corpus tibiae, matrix fiber bundles of collagen fibrils ran in parallel along the axis of the bone. The interosseus membrane entered into the matrix fiber bundles about 500 μm in width at the lateral border of Corpus tibiae. On the lateral and medial surface of the proximal end of Corpus tibiae, matrix fiber bundles mingled each other, and the tendons of M. tibialis anterior and M. sartorius entered into bone matrix. On the posterior surface of the proximal end of Corpus tibiae, matrix fiber bundles mingled. On the posterior surface of the central and lower part, matrix fiber bundles ran in parallel along the long axis of the bone. The matrix fiber bundles of the internal surface of Corpus tibia ran along the long axis of the bone.<BR>At the external basic lamellae, the lamellae about 5 μm and 3 μm in thickness arranged alternately. At the Haversian lamellae, the lamellae about 4 μm and 2 μm in thickness arranged alternately. The former lamellae were composed of fiber bundles running along the long axis of the bone, and the latter lamellae were composed of fiber bundles running concentrically.

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