The Experts below are selected from a list of 24 Experts worldwide ranked by ideXlab platform
Joonho Chang - One of the best experts on this subject based on the ideXlab platform.
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Investigation of methods for estimating hand Bone dimensions using X-ray hand anthropometric data
International journal of occupational safety and ergonomics : JOSE, 2016Co-Authors: Yong-ku Kong, Andris Freivalds, Dae Min Kim, Joonho ChangAbstract:This study examined two conversion methods, M1 and M2, to predict finger/Phalange Bone lengths based on finger/Phalange surface lengths. Forty-one Korean college students (25 males and 16 females) were recruited and their finger/Phalange surface lengths, Bone lengths and grip strengths were measured using a vernier caliper, an X-ray generator and a double-handle force measurement system, respectively. M1 and M2 were defined as formulas able to estimate finger/Phalange Bone lengths based on one dimension (i.e., surface hand length) and four finger dimensions (surface finger lengths), respectively. As a result of conversion, the estimation errors by M1 presented mean 1.22 mm, which was smaller than those (1.29 mm) by M2. The Bone lengths estimated by M1 (mean r = 0.81) presented higher correlations with the measured Bone lengths than those estimated by M2 (0.79). Thus, the M1 method was recommended in the present study, based on conversion simplicity and accuracy.
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Investigation of Relationships between Hand Surface Dimensions and Hand Bone Dimensions
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 2013Co-Authors: Joonho Chang, Yong-ku Kong, Andris Freivalds, Hyun Sung Kang, Jae Hyun ChoAbstract:This study developed a method to predict finger/Phalange Bone lengths from a surface hand length. 41 Korean college students (25 males and 16 females) were recruited, and their surface hand lengths and finger/Phalange Bone lengths were measured using a vernier caliper and a X-ray generator, respectively. The conversion method developed equations to estimate finger/Phalange Bone lengths based on one surface hand length by relationships among the measured finger/Phalange Bone lengths. The average estimation error between the estimated Bone lengths and measured Bone lengths was 1.76 mm (2.3 %) with SD = 0.3 mm on finger Bone lengths and 0.99 mm (3.2 %) with SD = 0.4 mm on Phalange Bone lengths. The estimated finger/Phalange Bone lengths had strong correlations, more than more than r = 0.8, with the measured finger/Phalange Bone lengths.
Yong-ku Kong - One of the best experts on this subject based on the ideXlab platform.
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Investigation of methods for estimating hand Bone dimensions using X-ray hand anthropometric data
International journal of occupational safety and ergonomics : JOSE, 2016Co-Authors: Yong-ku Kong, Andris Freivalds, Dae Min Kim, Joonho ChangAbstract:This study examined two conversion methods, M1 and M2, to predict finger/Phalange Bone lengths based on finger/Phalange surface lengths. Forty-one Korean college students (25 males and 16 females) were recruited and their finger/Phalange surface lengths, Bone lengths and grip strengths were measured using a vernier caliper, an X-ray generator and a double-handle force measurement system, respectively. M1 and M2 were defined as formulas able to estimate finger/Phalange Bone lengths based on one dimension (i.e., surface hand length) and four finger dimensions (surface finger lengths), respectively. As a result of conversion, the estimation errors by M1 presented mean 1.22 mm, which was smaller than those (1.29 mm) by M2. The Bone lengths estimated by M1 (mean r = 0.81) presented higher correlations with the measured Bone lengths than those estimated by M2 (0.79). Thus, the M1 method was recommended in the present study, based on conversion simplicity and accuracy.
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Investigation of Relationships between Hand Surface Dimensions and Hand Bone Dimensions
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 2013Co-Authors: Joonho Chang, Yong-ku Kong, Andris Freivalds, Hyun Sung Kang, Jae Hyun ChoAbstract:This study developed a method to predict finger/Phalange Bone lengths from a surface hand length. 41 Korean college students (25 males and 16 females) were recruited, and their surface hand lengths and finger/Phalange Bone lengths were measured using a vernier caliper and a X-ray generator, respectively. The conversion method developed equations to estimate finger/Phalange Bone lengths based on one surface hand length by relationships among the measured finger/Phalange Bone lengths. The average estimation error between the estimated Bone lengths and measured Bone lengths was 1.76 mm (2.3 %) with SD = 0.3 mm on finger Bone lengths and 0.99 mm (3.2 %) with SD = 0.4 mm on Phalange Bone lengths. The estimated finger/Phalange Bone lengths had strong correlations, more than more than r = 0.8, with the measured finger/Phalange Bone lengths.
Chen Zhong-heng - One of the best experts on this subject based on the ideXlab platform.
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The Study of Clinical Application on X-ray Measurement of Metacarpal andPhalanges Bones and Their Mathematical Relations
Journal of Practical Radiology, 2002Co-Authors: Chen Zhong-hengAbstract:Objective To provide credible anatomic data and information for clinical diagnosis and surgery of hand by measuring the length of metacarpal Bone and Phalanges of hands on X-ray films and to study their mathematical relations.Methods The X-ray films of hands on posteroanterior position were taken in 186 healthy college students (M90,F96).The length of each metacarpal and Phalange were measured.All the data were calculated by SPSS software.Results The mathematical relations of each metacarpal and Phalange Bone were obtained .It was found that there were sexual differences in the ratio of first to second,second to fourth,second to fifth and third to fourth metacarpal length,the ratio of first to second,first to fourth and second to fifth proximal Phalangeal length,the ratio of second to fifth,third to fifth and fourth to fifth middle Phalangeal length and the ratio of first to second and first to third distal Phalangeal length.Conclusion The results of this mathematical relations are of great significant in orthopaedic surgery of hand.
Andris Freivalds - One of the best experts on this subject based on the ideXlab platform.
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Investigation of methods for estimating hand Bone dimensions using X-ray hand anthropometric data
International journal of occupational safety and ergonomics : JOSE, 2016Co-Authors: Yong-ku Kong, Andris Freivalds, Dae Min Kim, Joonho ChangAbstract:This study examined two conversion methods, M1 and M2, to predict finger/Phalange Bone lengths based on finger/Phalange surface lengths. Forty-one Korean college students (25 males and 16 females) were recruited and their finger/Phalange surface lengths, Bone lengths and grip strengths were measured using a vernier caliper, an X-ray generator and a double-handle force measurement system, respectively. M1 and M2 were defined as formulas able to estimate finger/Phalange Bone lengths based on one dimension (i.e., surface hand length) and four finger dimensions (surface finger lengths), respectively. As a result of conversion, the estimation errors by M1 presented mean 1.22 mm, which was smaller than those (1.29 mm) by M2. The Bone lengths estimated by M1 (mean r = 0.81) presented higher correlations with the measured Bone lengths than those estimated by M2 (0.79). Thus, the M1 method was recommended in the present study, based on conversion simplicity and accuracy.
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Investigation of Relationships between Hand Surface Dimensions and Hand Bone Dimensions
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 2013Co-Authors: Joonho Chang, Yong-ku Kong, Andris Freivalds, Hyun Sung Kang, Jae Hyun ChoAbstract:This study developed a method to predict finger/Phalange Bone lengths from a surface hand length. 41 Korean college students (25 males and 16 females) were recruited, and their surface hand lengths and finger/Phalange Bone lengths were measured using a vernier caliper and a X-ray generator, respectively. The conversion method developed equations to estimate finger/Phalange Bone lengths based on one surface hand length by relationships among the measured finger/Phalange Bone lengths. The average estimation error between the estimated Bone lengths and measured Bone lengths was 1.76 mm (2.3 %) with SD = 0.3 mm on finger Bone lengths and 0.99 mm (3.2 %) with SD = 0.4 mm on Phalange Bone lengths. The estimated finger/Phalange Bone lengths had strong correlations, more than more than r = 0.8, with the measured finger/Phalange Bone lengths.
Jae Hyun Cho - One of the best experts on this subject based on the ideXlab platform.
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Investigation of Relationships between Hand Surface Dimensions and Hand Bone Dimensions
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 2013Co-Authors: Joonho Chang, Yong-ku Kong, Andris Freivalds, Hyun Sung Kang, Jae Hyun ChoAbstract:This study developed a method to predict finger/Phalange Bone lengths from a surface hand length. 41 Korean college students (25 males and 16 females) were recruited, and their surface hand lengths and finger/Phalange Bone lengths were measured using a vernier caliper and a X-ray generator, respectively. The conversion method developed equations to estimate finger/Phalange Bone lengths based on one surface hand length by relationships among the measured finger/Phalange Bone lengths. The average estimation error between the estimated Bone lengths and measured Bone lengths was 1.76 mm (2.3 %) with SD = 0.3 mm on finger Bone lengths and 0.99 mm (3.2 %) with SD = 0.4 mm on Phalange Bone lengths. The estimated finger/Phalange Bone lengths had strong correlations, more than more than r = 0.8, with the measured finger/Phalange Bone lengths.