Femoral Shape Analysis by Bi-plane X-ray Photogrammetry : Graphic Display and Calculation of Anteversion Angle and Neck-shaft Angle
スポンサーリンク
概要
- 論文の詳細を見る
For the osteotomy on hip joint diseases caused by abnormality of the shape of bones, an accurate 3-dimensional femoral shape must be recognized before operation. It was been reported by the present authors that spinal shape is sufficiently analyzed by a developed system based on bi-plane photogrammetry. This paper describe an application of the system to the femoral shape analysis. The shaft axis, the neck axis, the head center of femur and the radius of the head are reconstructed 3-dimensionally using the vector anlysis of plane and line, and the least square approximation method. The obtained axes and head are graphically displayed on the screen of a personal computer through the perspective transformation. The shape parameters usually used in clinic, such as the anteversion angle and the neck-shaft angle, are also calculated by the present method. Result obtained by this system is compared with that by photographical measurement of exposed femurs, then the present method is reduced to have higher accuracy than Kai's method currently used.
- 一般社団法人日本機械学会の論文
著者
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Umezaki Eisaku
Department Of Mechanical Engineering Nippon Inst. Of Tech.
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Takahashi Kazuhisa
Department Of Immunology Juntendo University School Of Medicine
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Tamaki Tamotsu
Department Of Mechanical Engineering Nippon Inst. Of Tech.
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Yamagata Masatsune
Department Of Orthopaedic Surgery Chiba Rosai Hospital
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Yamagata Masatsune
Department Of Orthopedic Surgery School Of Medicine Chiba University
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Inoue Shun-ichi
Department Of Orthop. Surg. School Of Med. Chiba University
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Inoue Shun-ichi
Department Of Applied Physics Graduate School Of Engineering University Of Tokyo
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TAMAKl Tamotsu
Department of Mechanical Engineering, Nippon Institute of Technology
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YAMAGUCHI Kiyonao
Department of Orthopedic Surgery , School of Medicine, Chiba University
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Takahashi Kazuhisa
Department Of Orthop. Surg. School Of Med. Chiba University
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Yamaguchi Kiyonao
Department Of Orthopedic Surgery School Of Medicine Chiba University
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Takahashi Kazuhisa
Department Of Applied Chemistry Faculty Of Science Science University Of Tokyo
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