Image registration method for assessing 3D hip alignment and implant position during standing posture
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- KOBAYASHI Koichi
- School of Health Sciences, Faculty of Medicine, Niigata University
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- KAI Shin
- Center for Fostering Innovative Leadership, Niigata University and Medacta Japan Co., Ltd.
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- SAKAMOTO Makoto
- School of Health Sciences, Faculty of Medicine, Niigata University
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- TANABE Yuji
- Department of Mechanical and Production Engineering, Niigata University
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- TOKUNAGA Kunihiko
- Niigata Hip Joint Center, Kameda Daiichi Hospital
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- MINATO Izumi
- Department of Orthopaedic Surgery, Niigata Rinko Hospital
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- SATO Takashi
- Department of Orthopaedic Surgery, Niigata Medical Center
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- KOGA Yoshio
- Division of Orthopaedic Biomechanics, Hokuetsu Hospital and Niohji Onesen Hospital
抄録
The range of motion (ROM) resulting from total hip arthroplasty (THA) depends on the relative orientation of the femoral and acetabular components, and malpositioning of components is a possible cause of several complications. The purpose of this study was to validate a 3-dimensional (3D) lower extremity alignment assessment system (3D LAAS) for the measurement of alignment of natural and implanted hip joints and implant position with respect to the target bone with the subject in a standing position. Sawbone femur and pelvis and femoral and acetabular components of a total hip arthroplasty system were used. Three spherical markers were attached to each sawbone and each component to define the local coordinate system. Outlines of the 3D bone models and component computer-aided design models were projected onto extracted contours of the femur, pelvis, and implants in calibrated frontal and oblique X-ray images. The 3D position of each model was recovered by minimizing the differences between projected outlines and contours. Mean absolute errors were less than 1.27 ± 0.79 mm and 0.99 ± 0.52° for femur and pelvis, 1.64 ± 0.66 mm and 1.54 ± 0.39° for femoral and acetabular components, 1.58 ± 0.29 mm and 1.75 ± 0.69° for femur and femoral component, and 1.51 ± 0.49 mm and 1.24 ± 0.14° for pelvis and acetabular component, indicating that the 3D LAAS is applicable to measure the alignment of natural and implanted hip joints and implant position after THA.
収録刊行物
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- Journal of Biomechanical Science and Engineering
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Journal of Biomechanical Science and Engineering 9 (2), 13-00162-13-00162, 2014
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282680238695424
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- NII論文ID
- 130004480303
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- ISSN
- 18809863
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可