The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Mitsuo Ochi - One of the best experts on this subject based on the ideXlab platform.

  • anterior inferior iliac spine Bone Morphology in hip dysplasia and its effect on hip range of motion in total hip arthroplasty
    Journal of Arthroplasty, 2016
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Soutarou Izumi, Nobuo Adachi, Mitsuo Ochi
    Abstract:

    Abstract Backgound Despite the fact that femoral impingement against the anterior inferior iliac spine (AIIS) is increasingly recognized, there is no description of morphologic features of the AIIS in hip dysplasia and their effect on hip range of motion (ROM) in total hip arthroplasty (THA). The purpose is to evaluate the Bone Morphology of the AIIS in hip dysplasia and whether its Morphology affects hip ROM in THA. Methods Computed tomography–based simulation software was used to create 3-dimensional Bone models and perform virtual simulations. Using the computed tomographic data of 85 patients (male: n = 25, female: n = 60, mean age: 60.9) with hip osteoarthritis due to dysplasia, we measured the straight, vertical, and horizontal distances between the anteroinferior edge of the AIIS and the center of rotation in sagittal and axial views. The anterior and lateral versions of the AIIS were also measured. We calculated the ROM of flexion (Flex), and internal rotation (Int-R) in THA in the software, and analyzed the correlations among them. Results The AIIS prominence is bigger and extends more anteriorly and laterally in males than in females. Furthermore, the taller the patient, the more the AIIS extends anteriorly and laterally. We found that Flex and Int-R decreased inversely proportional to the size and lateral version of the AIIS. Conclusion Our results demonstrated that the AIIS Bone Morphology substantially affects the ROM of Flex and Int-R especially in patients with laterally large AIIS bony anatomy in THA. Furthermore, our result indicates that the morphologic features of AIIS in hip dysplasia may be different between males and females.

  • bony impingement depends on the Bone Morphology of the hip after total hip arthroplasty
    International Orthopaedics, 2013
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Ryo Mori, Michio Hamanishi, Mitsuo Ochi
    Abstract:

    Purpose The purpose of this study was to evaluate whether the Bone Morphology of the hip affects the range of motion (ROM) in total hip arthroplasty (THA).

Takeshi Shoji - One of the best experts on this subject based on the ideXlab platform.

  • anterior inferior iliac spine Bone Morphology in hip dysplasia and its effect on hip range of motion in total hip arthroplasty
    Journal of Arthroplasty, 2016
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Soutarou Izumi, Nobuo Adachi, Mitsuo Ochi
    Abstract:

    Abstract Backgound Despite the fact that femoral impingement against the anterior inferior iliac spine (AIIS) is increasingly recognized, there is no description of morphologic features of the AIIS in hip dysplasia and their effect on hip range of motion (ROM) in total hip arthroplasty (THA). The purpose is to evaluate the Bone Morphology of the AIIS in hip dysplasia and whether its Morphology affects hip ROM in THA. Methods Computed tomography–based simulation software was used to create 3-dimensional Bone models and perform virtual simulations. Using the computed tomographic data of 85 patients (male: n = 25, female: n = 60, mean age: 60.9) with hip osteoarthritis due to dysplasia, we measured the straight, vertical, and horizontal distances between the anteroinferior edge of the AIIS and the center of rotation in sagittal and axial views. The anterior and lateral versions of the AIIS were also measured. We calculated the ROM of flexion (Flex), and internal rotation (Int-R) in THA in the software, and analyzed the correlations among them. Results The AIIS prominence is bigger and extends more anteriorly and laterally in males than in females. Furthermore, the taller the patient, the more the AIIS extends anteriorly and laterally. We found that Flex and Int-R decreased inversely proportional to the size and lateral version of the AIIS. Conclusion Our results demonstrated that the AIIS Bone Morphology substantially affects the ROM of Flex and Int-R especially in patients with laterally large AIIS bony anatomy in THA. Furthermore, our result indicates that the morphologic features of AIIS in hip dysplasia may be different between males and females.

  • bony impingement depends on the Bone Morphology of the hip after total hip arthroplasty
    International Orthopaedics, 2013
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Ryo Mori, Michio Hamanishi, Mitsuo Ochi
    Abstract:

    Purpose The purpose of this study was to evaluate whether the Bone Morphology of the hip affects the range of motion (ROM) in total hip arthroplasty (THA).

Yuji Yasunaga - One of the best experts on this subject based on the ideXlab platform.

  • anterior inferior iliac spine Bone Morphology in hip dysplasia and its effect on hip range of motion in total hip arthroplasty
    Journal of Arthroplasty, 2016
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Soutarou Izumi, Nobuo Adachi, Mitsuo Ochi
    Abstract:

    Abstract Backgound Despite the fact that femoral impingement against the anterior inferior iliac spine (AIIS) is increasingly recognized, there is no description of morphologic features of the AIIS in hip dysplasia and their effect on hip range of motion (ROM) in total hip arthroplasty (THA). The purpose is to evaluate the Bone Morphology of the AIIS in hip dysplasia and whether its Morphology affects hip ROM in THA. Methods Computed tomography–based simulation software was used to create 3-dimensional Bone models and perform virtual simulations. Using the computed tomographic data of 85 patients (male: n = 25, female: n = 60, mean age: 60.9) with hip osteoarthritis due to dysplasia, we measured the straight, vertical, and horizontal distances between the anteroinferior edge of the AIIS and the center of rotation in sagittal and axial views. The anterior and lateral versions of the AIIS were also measured. We calculated the ROM of flexion (Flex), and internal rotation (Int-R) in THA in the software, and analyzed the correlations among them. Results The AIIS prominence is bigger and extends more anteriorly and laterally in males than in females. Furthermore, the taller the patient, the more the AIIS extends anteriorly and laterally. We found that Flex and Int-R decreased inversely proportional to the size and lateral version of the AIIS. Conclusion Our results demonstrated that the AIIS Bone Morphology substantially affects the ROM of Flex and Int-R especially in patients with laterally large AIIS bony anatomy in THA. Furthermore, our result indicates that the morphologic features of AIIS in hip dysplasia may be different between males and females.

  • bony impingement depends on the Bone Morphology of the hip after total hip arthroplasty
    International Orthopaedics, 2013
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Ryo Mori, Michio Hamanishi, Mitsuo Ochi
    Abstract:

    Purpose The purpose of this study was to evaluate whether the Bone Morphology of the hip affects the range of motion (ROM) in total hip arthroplasty (THA).

Takuma Yamasaki - One of the best experts on this subject based on the ideXlab platform.

  • anterior inferior iliac spine Bone Morphology in hip dysplasia and its effect on hip range of motion in total hip arthroplasty
    Journal of Arthroplasty, 2016
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Soutarou Izumi, Nobuo Adachi, Mitsuo Ochi
    Abstract:

    Abstract Backgound Despite the fact that femoral impingement against the anterior inferior iliac spine (AIIS) is increasingly recognized, there is no description of morphologic features of the AIIS in hip dysplasia and their effect on hip range of motion (ROM) in total hip arthroplasty (THA). The purpose is to evaluate the Bone Morphology of the AIIS in hip dysplasia and whether its Morphology affects hip ROM in THA. Methods Computed tomography–based simulation software was used to create 3-dimensional Bone models and perform virtual simulations. Using the computed tomographic data of 85 patients (male: n = 25, female: n = 60, mean age: 60.9) with hip osteoarthritis due to dysplasia, we measured the straight, vertical, and horizontal distances between the anteroinferior edge of the AIIS and the center of rotation in sagittal and axial views. The anterior and lateral versions of the AIIS were also measured. We calculated the ROM of flexion (Flex), and internal rotation (Int-R) in THA in the software, and analyzed the correlations among them. Results The AIIS prominence is bigger and extends more anteriorly and laterally in males than in females. Furthermore, the taller the patient, the more the AIIS extends anteriorly and laterally. We found that Flex and Int-R decreased inversely proportional to the size and lateral version of the AIIS. Conclusion Our results demonstrated that the AIIS Bone Morphology substantially affects the ROM of Flex and Int-R especially in patients with laterally large AIIS bony anatomy in THA. Furthermore, our result indicates that the morphologic features of AIIS in hip dysplasia may be different between males and females.

  • bony impingement depends on the Bone Morphology of the hip after total hip arthroplasty
    International Orthopaedics, 2013
    Co-Authors: Takeshi Shoji, Yuji Yasunaga, Takuma Yamasaki, Ryo Mori, Michio Hamanishi, Mitsuo Ochi
    Abstract:

    Purpose The purpose of this study was to evaluate whether the Bone Morphology of the hip affects the range of motion (ROM) in total hip arthroplasty (THA).

Marjolein C H Van Der Meulen - One of the best experts on this subject based on the ideXlab platform.

  • in vivo tibial stiffness is maintained by whole Bone Morphology and cross sectional geometry in growing female mice
    Journal of Biomechanics, 2010
    Co-Authors: Russell P Main, Maureen E Lynch, Marjolein C H Van Der Meulen
    Abstract:

    Abstract Whole Bone Morphology, cortical geometry, and tissue material properties modulate skeletal stresses and strains that in turn influence skeletal physiology and remodeling. Understanding how Bone stiffness, the relationship between applied load and tissue strain, is regulated by developmental changes in Bone structure and tissue material properties is important in implementing biophysical strategies for promoting healthy Bone growth and preventing Bone loss. The goal of this study was to relate developmental patterns of in vivo whole Bone stiffness to whole Bone Morphology, cross-sectional geometry, and tissue properties using a mouse axial loading model. We measured in vivo tibial stiffness in three age groups (6, 10, 16 wk old) of female C57Bl/6 mice during cyclic tibial compression. Tibial stiffness was then related to cortical geometry, longitudinal Bone curvature, and tissue mineral density using microcomputed tomography (microCT). Tibial stiffness and the stresses induced by axial compression were generally maintained from 6 to 16 wks of age. Growth-related increases in cortical cross-sectional geometry and longitudinal Bone curvature had counteracting effects on induced Bone stresses and, therefore, maintained tibial stiffness similarly with growth. Tissue mineral density increased slightly from 6 to 16 wks of age, and although the effects of this increase on tibial stiffness were not directly measured, its role in the modulation of whole Bone stiffness was likely minor over the age range examined. Thus, whole Bone Morphology, as characterized by longitudinal curvature, along with cortical geometry, plays an important role in modulating Bone stiffness during development and should be considered when evaluating and designing in vivo loading studies and biophysical skeletal therapies.