Cross-sectional geometry of the femoral diaphyseal cortical bones: analysis of central mass distribution

Tsurumoto, Toshiyuki; Endo, Daisuke; Sawamoto, Kazunobu; Imamura, Takeshi; Murai, Kiyohito; Nishi, Keita; Manabe, Yoshitaka; Oyamada, Joichi; Sakamoto, Junya; Ogami-Takamura, Keiko

doi:10.1007/s12565-022-00676-5

Anat Sci Int

2022

DOI: 10.1007/s12565-022-00676-5

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Cross-sectional geometry of the femoral diaphyseal cortical bones: analysis of central mass distribution

Toshiyuki Tsurumoto

Daisuke Endo

Kazunobu Sawamoto

et al.

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2024

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The cross‐sectional morphology of the proximal femoral diaphysis is defined by the anteversion angle

Endo,

Nishi,

Imamura

et al. 2024

Journal Orthopaedic Research

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Osteoporosis in postmenopausal women is one of the causes of femoral fractures and is prevented by the administration of bisphosphonates. Individual morphologies are considered to increase the risk of atypical fractures associated with long‐term administration. To evaluate cortical bone morphology quantitatively, we established a method to measure the distance from the center point of a cross‐section to the external and internal borders based on CT images. Using this method, 44 sides of a female femoral skeleton specimen were examined and areas of protrusion and thickening in the medial anterior and lateral posterior regions just below the lesser trochanter were identified. These positions strongly correlated with the anteversion angle, suggesting the involvement of the distribution of the load received from body weight defined by the angle. The finite element method was used to examine the relationships between the positions of these areas with compressive and tensile stress distribution areas in the one‐legged standing condition. The medial anterior region and lateral posterior region protruded and thickened in response to compressive and tensile stress, respectively. In addition, a hierarchical relationship was observed between the anteversion angle, tensile stress distribution, protrusion, and thickening in femurs with thinning of cortical bone, indicating that morphogenesis occurs adaptively to loading. The present results demonstrate the usefulness of this method in considering the formation mechanism and function of the femoral diaphysis and suggest that bone remodeling is necessary to maintain adaptability.

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The cross‐sectional morphology of the proximal femoral diaphysis is defined by the anteversion angle

Endo,

Nishi,

Imamura

et al. 2024

Journal Orthopaedic Research

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Cross-sectional geometry of the femoral diaphyseal cortical bones: analysis of central mass distribution

Cited by 1 publication

References 38 publications

The cross‐sectional morphology of the proximal femoral diaphysis is defined by the anteversion angle

The cross‐sectional morphology of the proximal femoral diaphysis is defined by the anteversion angle

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