Which Portion in a Facet is Specifically Affected by Articular Cartilage Degeneration with Aging in the Human Lumbar Zygapophysial Joint?
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- TANNO Iwao
- Department of Orthopedic Surgery, Sapporo Medical University School of Medicine
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- OGUMA Hiroshi
- Department of Orthopedic Surgery, Sapporo Medical University School of Medicine
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- MURAKAMI Gen
- Department of Anatomy, Sapporo Medical University School of Medicine
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- SATO Shu-ichi
- Department of Physical Therapy, Aomori Prefectural University of Health and Welfare
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- YAMASHITA Toshihiko
- Department of Orthopedic Surgery, Sapporo Medical University School of Medicine
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抄録
Using 10 osteoligamentous vertebral columns obtained from elderly donated cadavers, we deseribe in detail degenerative changes of the articular cartilage in lumbar zygapophysial joints to show which portion in a facet is specffically affected. Degenerative changes, including extended cartilage defects, occurred in multiple facets of every specimen. The results demonstrated 5 basic morphologies of degeneration, i.e., 1) marginal dominace in the articular surface, 2) lower segment dominance except for the lowest (L5/S) facet, 3) advancement in the inferior articular process, 4) cranial and caudal dominance rather than the dorsal dominance in the articular surface and 5) progress in a mirror-image manner. These rules seemed to be consistent with differences in size, shape and kinesiological aspects of the facet between segments and between portions in a facet.
収録刊行物
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- Ｏｋａｊｉｍａｓ Ｆｏｌｉａ Ａｎａｔｏｍｉｃａ Ｊａｐｏｎｉｃａ
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Ｏｋａｊｉｍａｓ Ｆｏｌｉａ Ａｎａｔｏｍｉｃａ Ｊａｐｏｎｉｃａ 80 (1), 29-34, 2003
オカジマ・フォリア・アナトミカ・ヤポニカ編集部