TY  - JOUR
AU  - Liu, Yaming
AU  - Antonijević, Đorđe
AU  - Li, Ruining
AU  - Fan, Yuxuan
AU  - Dukić, Ksenija
AU  - Mićić, Milutin
AU  - Yu, Genyu
AU  - Li, Zhiyu
AU  - Đurić, Marija
AU  - Fan, Yifang
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10013
AB  - The aim of the present paper is to determine the sex of the individual using three-dimensional geometric and inertial analyses of metatarsal bones. Metatarsals of 60 adult Chinese subjects of both sexes were scanned using Aquilion One-320 Slice CT Scanner. The three-dimensional models of the metatarsals were reconstructed and thereafter a novel software using the center of mass set as the origin and the three principal axes of inertia was employed for model alignment. Eight geometric and inertial variables were assessed: the bone length, bone width, bone height, surface-area-to-volume ratio, bone density and principal moments of inertia around x, y and z axis. Furthermore, the discriminant functions were established using stepwise discriminant function analysis. A cross-validation procedure was performed to evaluate discriminant accuracy of functions. The results indicated that inertial variables exhibit significant sexual dimorphism, especially principal moments of inertia around z axis. The highest dimorphic values were found in surface-area-to-volume ratio, principal moments of inertia around z axis and bone height. The accuracy rate of the discriminant functions for sex determination ranged from 88.3% to 98.3% (88.3% - 98.3% cross-validated). The highest accuracy of function was established based on the 3rd metatarsal bone. This study showed for the first time that the principal moment of inertia of the human bone may be successfully implemented for sex estimation. In conclusion, the sex of the individual can be accurately estimated using a combination of geometric and inertial variables of the metatarsal bones. The accuracy should be further confirmed in a larger sample size and be tested or independently developed for distinct population/age groups before the functions are widely applied in unidentified skeletons in forensic and bioarchaeological contexts.
T2  - Frontiers in Endocrinology
T1  - Study of Sexual Dimorphism in Metatarsal Bones: Geometric and Inertial Analysis of the Three-Dimensional Reconstructed Models
DO  - 10.3389/fendo.2021.734362
ER  - 

@article{
author = "Liu, Yaming and Antonijević, Đorđe and Li, Ruining and Fan, Yuxuan and Dukić, Ksenija and Mićić, Milutin and Yu, Genyu and Li, Zhiyu and Đurić, Marija and Fan, Yifang",
year = "2021",
abstract = "The aim of the present paper is to determine the sex of the individual using three-dimensional geometric and inertial analyses of metatarsal bones. Metatarsals of 60 adult Chinese subjects of both sexes were scanned using Aquilion One-320 Slice CT Scanner. The three-dimensional models of the metatarsals were reconstructed and thereafter a novel software using the center of mass set as the origin and the three principal axes of inertia was employed for model alignment. Eight geometric and inertial variables were assessed: the bone length, bone width, bone height, surface-area-to-volume ratio, bone density and principal moments of inertia around x, y and z axis. Furthermore, the discriminant functions were established using stepwise discriminant function analysis. A cross-validation procedure was performed to evaluate discriminant accuracy of functions. The results indicated that inertial variables exhibit significant sexual dimorphism, especially principal moments of inertia around z axis. The highest dimorphic values were found in surface-area-to-volume ratio, principal moments of inertia around z axis and bone height. The accuracy rate of the discriminant functions for sex determination ranged from 88.3% to 98.3% (88.3% - 98.3% cross-validated). The highest accuracy of function was established based on the 3rd metatarsal bone. This study showed for the first time that the principal moment of inertia of the human bone may be successfully implemented for sex estimation. In conclusion, the sex of the individual can be accurately estimated using a combination of geometric and inertial variables of the metatarsal bones. The accuracy should be further confirmed in a larger sample size and be tested or independently developed for distinct population/age groups before the functions are widely applied in unidentified skeletons in forensic and bioarchaeological contexts.",
journal = "Frontiers in Endocrinology",
title = "Study of Sexual Dimorphism in Metatarsal Bones: Geometric and Inertial Analysis of the Three-Dimensional Reconstructed Models",
doi = "10.3389/fendo.2021.734362"
}

Liu, Y., Antonijević, Đ., Li, R., Fan, Y., Dukić, K., Mićić, M., Yu, G., Li, Z., Đurić, M.,& Fan, Y.. (2021). Study of Sexual Dimorphism in Metatarsal Bones: Geometric and Inertial Analysis of the Three-Dimensional Reconstructed Models. in Frontiers in Endocrinology.
https://doi.org/10.3389/fendo.2021.734362

Liu Y, Antonijević Đ, Li R, Fan Y, Dukić K, Mićić M, Yu G, Li Z, Đurić M, Fan Y. Study of Sexual Dimorphism in Metatarsal Bones: Geometric and Inertial Analysis of the Three-Dimensional Reconstructed Models. in Frontiers in Endocrinology. 2021;.
doi:10.3389/fendo.2021.734362 .

Liu, Yaming, Antonijević, Đorđe, Li, Ruining, Fan, Yuxuan, Dukić, Ksenija, Mićić, Milutin, Yu, Genyu, Li, Zhiyu, Đurić, Marija, Fan, Yifang, "Study of Sexual Dimorphism in Metatarsal Bones: Geometric and Inertial Analysis of the Three-Dimensional Reconstructed Models" in Frontiers in Endocrinology (2021),
https://doi.org/10.3389/fendo.2021.734362 . .

TY  - JOUR
AU  - Yu, Genyu
AU  - Fan, Yuzhou
AU  - Fan, Yuxuan
AU  - Li, Ruining
AU  - Liu, Yaming
AU  - Antonijević, Đorđe
AU  - Milovanović, Petar
AU  - Zhang, Bo
AU  - Li, Zhiyu
AU  - Đurić, Marija
AU  - Fan, Yifang
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9100
AB  - Hallux valgus (HV), the bunion of the first metatarsophalangeal joint (MTPJ), bothers many adults. No consensus has been reached about the causes of HV, be it a hereditary, or acquired, or multifactorial disease. Nor has agreement been reached using MTPJ angle to assess HV based on X-ray because in most cases the assessment of MTPJ is not reliable as it depends on the posture during scanning. In this study, we assume that HV is predominately acquired and that shoe wearing per se is an important player in HV pathogenesis. To verify our hypothesis, a CT-based finite element (FE) model of the first MTPJ of fossil remains of bear-footed Homo naledi was created and compared to that of five contemporary shoe-wearing wrestlers (10 models from two scans at an interval of about 18 months) because Homo naledi's first MTPJ is an ideal model for non-shoe wearing with parallel sesamoid grooves. We developed the first MTPJ structure transformation method and created MTPJ joint capsule model for both Homo naledi and wrestlers. Constraint on the medial side of the first MTPJ capsule was set to simulate shoe-wearing conditions compared to the lack of medial constraint for barefooted conditions. Analysis of eight FE models of different angles for the first MTPJ of Homo naledi was performed by the first MTPJ transformation method and results showed that stress concentrated on the medial capsule of the first MTPJ in simulated shoe-wearing conditions, even at MTPJ angle of 0°. Increase in the first MTPJ angle further increased stress concentration on the medial side, and stress-growth relationship might reveal the causes of HV. We further developed a method to position the first MTPJ in wrestlers and created CT-based models at two time points. It was evident that the first MTPJ angle increased in all but one athlete, with a maximal increase of 4.03 degrees. This verifies our hypothesis that HV might be developed by wearing shoes. Further longitudinal studies with larger sample sizes are needed to additionally validate our results and determine the magnitude of the effects of shoe wearing on development and progression of HV.
T2  - Frontiers in Bioengineering and Biotechnology
T1  - The Role of Footwear in the Pathogenesis of Hallux Valgus: A Proof-of-Concept Finite Element Analysis in Recent Humans and Homo naledi
VL  - 8
DO  - 10.3389/fbioe.2020.00648
ER  - 

@article{
author = "Yu, Genyu and Fan, Yuzhou and Fan, Yuxuan and Li, Ruining and Liu, Yaming and Antonijević, Đorđe and Milovanović, Petar and Zhang, Bo and Li, Zhiyu and Đurić, Marija and Fan, Yifang",
year = "2020",
abstract = "Hallux valgus (HV), the bunion of the first metatarsophalangeal joint (MTPJ), bothers many adults. No consensus has been reached about the causes of HV, be it a hereditary, or acquired, or multifactorial disease. Nor has agreement been reached using MTPJ angle to assess HV based on X-ray because in most cases the assessment of MTPJ is not reliable as it depends on the posture during scanning. In this study, we assume that HV is predominately acquired and that shoe wearing per se is an important player in HV pathogenesis. To verify our hypothesis, a CT-based finite element (FE) model of the first MTPJ of fossil remains of bear-footed Homo naledi was created and compared to that of five contemporary shoe-wearing wrestlers (10 models from two scans at an interval of about 18 months) because Homo naledi's first MTPJ is an ideal model for non-shoe wearing with parallel sesamoid grooves. We developed the first MTPJ structure transformation method and created MTPJ joint capsule model for both Homo naledi and wrestlers. Constraint on the medial side of the first MTPJ capsule was set to simulate shoe-wearing conditions compared to the lack of medial constraint for barefooted conditions. Analysis of eight FE models of different angles for the first MTPJ of Homo naledi was performed by the first MTPJ transformation method and results showed that stress concentrated on the medial capsule of the first MTPJ in simulated shoe-wearing conditions, even at MTPJ angle of 0°. Increase in the first MTPJ angle further increased stress concentration on the medial side, and stress-growth relationship might reveal the causes of HV. We further developed a method to position the first MTPJ in wrestlers and created CT-based models at two time points. It was evident that the first MTPJ angle increased in all but one athlete, with a maximal increase of 4.03 degrees. This verifies our hypothesis that HV might be developed by wearing shoes. Further longitudinal studies with larger sample sizes are needed to additionally validate our results and determine the magnitude of the effects of shoe wearing on development and progression of HV.",
journal = "Frontiers in Bioengineering and Biotechnology",
title = "The Role of Footwear in the Pathogenesis of Hallux Valgus: A Proof-of-Concept Finite Element Analysis in Recent Humans and Homo naledi",
volume = "8",
doi = "10.3389/fbioe.2020.00648"
}

Yu, G., Fan, Y., Fan, Y., Li, R., Liu, Y., Antonijević, Đ., Milovanović, P., Zhang, B., Li, Z., Đurić, M.,& Fan, Y.. (2020). The Role of Footwear in the Pathogenesis of Hallux Valgus: A Proof-of-Concept Finite Element Analysis in Recent Humans and Homo naledi. in Frontiers in Bioengineering and Biotechnology, 8.
https://doi.org/10.3389/fbioe.2020.00648

Yu G, Fan Y, Fan Y, Li R, Liu Y, Antonijević Đ, Milovanović P, Zhang B, Li Z, Đurić M, Fan Y. The Role of Footwear in the Pathogenesis of Hallux Valgus: A Proof-of-Concept Finite Element Analysis in Recent Humans and Homo naledi. in Frontiers in Bioengineering and Biotechnology. 2020;8.
doi:10.3389/fbioe.2020.00648 .

Yu, Genyu, Fan, Yuzhou, Fan, Yuxuan, Li, Ruining, Liu, Yaming, Antonijević, Đorđe, Milovanović, Petar, Zhang, Bo, Li, Zhiyu, Đurić, Marija, Fan, Yifang, "The Role of Footwear in the Pathogenesis of Hallux Valgus: A Proof-of-Concept Finite Element Analysis in Recent Humans and Homo naledi" in Frontiers in Bioengineering and Biotechnology, 8 (2020),
https://doi.org/10.3389/fbioe.2020.00648 . .