Determinants of fracture type in the proximal femur: Biomechanical study of fresh frozen cadavers and finite element models

Yano, Sei; Matsuura, Yusuke; Hagiwara, Shigeo; Nakamura, Junichi; Kawarai, Yuya; Suzuki, Takane; Kanno, Keijiro; Shoda, Jumpei; Tsurumi, Yousuke; Ohtori, Seiji

doi:10.1016/j.bone.2022.116352

Cited by 3 publications

(3 citation statements)

References 33 publications

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“…Unlike hip fractures, which are characterized by the immediate disappearance of mobility and urgent need for hospitalization and surgery 16 , many vertebral fractures are asymptomatic and affect a larger number of people. In addition, the hip is prone to fracture due to lateral external force 46 , while the vertebral body is vulnerable to both longitudinal and lateral external forces. This also explains why falls account for the majority cause of hip fractures 47 while only responsible for a quarter of vertebral fractures 10 .…”

Section: Discussionmentioning

confidence: 99%

Incidence and cost of vertebral fracture in urban China: A five-year population-based cohort study

Zheng

Huang

et al. 2023

International Journal of Surgery

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Background: Osteoporotic vertebral fractures cause pain and disability, which result in a heavy socioeconomic burden. However, the incidence and cost of vertebral fractures in China are unknown. We aimed to assess the incidence and cost of clinically recognized vertebral fractures among people aged 50 years and older in China from 2013 to 2017. Materials and methods: This population-based cohort study was conducted by using Urban Employee Basic Medical Insurance (UEBMI) and Urban Resident Basic Medical Insurance (URBMI) data in China from 2013 to 2017, which covered more than 95% of the Chinese population in urban areas. Vertebral fractures were identified by the primary diagnosis (i.e. International Classification of Diseases code or text of diagnosis) in UEBMI and URBMI. The incidence and medical cost of these clinically recognized vertebral fractures in urban China were calculated. Results: A total of 271 981 vertebral fractures (186 428, 68.5% females and 85 553, 31.5% males) were identified, with a mean age of 70.26 years. The incidence of vertebral fractures among patients aged 50 years and over in China increased ~1.79-fold during the 5 years, from 85.21 per 100 000 person-years in 2013 to 152.13 per 100 000 person-years in 2017. Medical costs for vertebral fractures increased from US$92.74 million in 2013 to US$505.3 million in 2017. Annual costs per vertebral fracture case increased from US$3.54 thousand in 2013 to US$5.35 thousand in 2017. Conclusion: The dramatic increase in the incidence and cost of clinically recognized vertebral fractures among patients aged 50 and over in urban China implies that more attention should be given to the management of osteoporosis to prevent osteoporotic fractures.

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Section: Discussionmentioning

confidence: 99%

Incidence and cost of vertebral fracture in urban China: A five-year population-based cohort study

Zheng

Huang

et al. 2023

International Journal of Surgery

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“…Geometric morphometry is the most direct and important criterion in the comparative study of bone structure. The diaphyseal cross-sectional properties, on which we focus here, are the following geometric parameters: (1) Section modulus ( Z ), which is approximately proportional to the bending or torsional moment that characterizes the cross-sectional strength of the bone [ 15 ], is a good indicator of a bone’s cross-sectional mechanical performance; (2) cortical thickness ratio (CTR, the dorsal cortical thickness/the plantar cortical thickness), which represents asymmetry of the cortical bone distribution between dorsal and plantar surfaces as well as a more defined direction of greatest bending rigidity; (3) the ratio of principal moments of area (Imax/Imin), which is an estimation of cross-sectional shape and bending rigidity; the larger the cross-sectional Imax/Imin ratio deviates from one, the greater the departure from circularity; and (4) percent cortical bone area (%CA, cortical area [CA]/total cross-sectional area), which provides an estimate of axial compressive or tensile strength. Calcaneal diaphyseal cross-sectional properties were measured at the MS (means of 40% and 50% locations) and DS locations (means of 20% and 30% locations).…”

Section: Methodsmentioning

confidence: 99%

Section: Micro-ct Scanning Of the Bonementioning

confidence: 99%

Morphologic and mechanical adaptive variations in Saiga tatarica calcaneus: A model for interpreting the bone functional adaptation of wild artiodactyl in captivity

Jing,

Xu,

Cai

et al. 2024

Vet World

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Background and Aim: Captivity alters the locomotor behavior of wild artiodactyls and affects the mechanical loading of the calcaneus; however, the resulting adaptive changes in calcaneus morphology have not been sufficiently studied to date. This study aimed to investigate the morphological and mechanical adaptive variations in the calcaneus of Saiga tatarica to understand further the functional adaptation of the calcaneus in wild artiodactyl to captivity. Materials and Methods: Paired calcanei from autopsy samples of six captive wild artiodactyls (S. tatarica) and six domesticated artiodactyls (Ovis aries) were divided into skeletally immature and mature groups using X-ray evaluation of growth plate closure. High-resolution microcomputed tomography revealed a calcaneal diaphyseal cross-section. The mechanical and nanomorphological characteristics of the trabecular bone were determined by atomic force microscopy. Results: The percent cortical bone area (%CA), cortical thickness ratio (CTR), and Young’s modulus (E) differed between species in the immature groups but not in the mature groups. S. tatarica had significantly higher growth rates for %CA, CTR, and E in the mid-shaft than O. aries (p < 0.05). Conclusion: The calcaneus morphology of S. tatarica converges with that of domesticated O. aries during ontogeny. These results indicate that the calcaneus of wild artiodactyls can undergo potentially transitional changes during the short-term adaptation to captivity. The above parameters can be preliminarily identified as morphological signs of functional bone adaptation in artiodactyls. Keywords: artiodactyl, bone functional adaptation, calcaneus, captivity, morphological variation, Saiga tatarica.

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Relationship between site-specific bone mineral density in the proximal femur and instability of proximal femoral fractures: A retrospective study

Kanazawa

Ohmori

Toda

et al. 2023

Orthopaedics & Traumatology: Surgery & Research

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Determinants of fracture type in the proximal femur: Biomechanical study of fresh frozen cadavers and finite element models

Cited by 3 publications

References 33 publications

Incidence and cost of vertebral fracture in urban China: A five-year population-based cohort study

Incidence and cost of vertebral fracture in urban China: A five-year population-based cohort study

Morphologic and mechanical adaptive variations in Saiga tatarica calcaneus: A model for interpreting the bone functional adaptation of wild artiodactyl in captivity

Relationship between site-specific bone mineral density in the proximal femur and instability of proximal femoral fractures: A retrospective study

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