Development of femur and tibia parametric models based on Chinese CT scans

DU Wenjing; LUO Xiao; HUANG Han; XU Shucai; ZHANG Jinhuan

doi:10.16511/j.cnki.qhdxxb.2018.26.046

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Journal of Tsinghua University(Science and Technology) ›› 2019, Vol. 59 ›› Issue (3) : 211-218. DOI: 10.16511/j.cnki.qhdxxb.2018.26.046

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Development of femur and tibia parametric models based on Chinese CT scans

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Abstract

Fractures of the lower extremity long bones are common in motor vehicle crashes and human finite-element models are very effective in studies of lower extremity injury risks and injury mechanisms. The subject characteristics (sex, age, stature and weight) significantly affect the bone geometry and the cortical bone thickness distribution. This study used 95 Chinese clinical CTs to develop femur and tibia parametric models using a male mid-size template model through morphing, fitting, and statistical analyses. The average absolute errors in the predicted external surface geometry models were less than 3 mm and that the average absolute errors in the predicted thickness models were less than 0.6 mm. Bone length was the most significant predictor for the bone geometry models. Age and BMI were both significant in predicting the femoral cortex thickness distribution while only age was significant for predicting the tibia's thickness distribution.

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vehicle safety / femur and tibia / cortical bone thickness / human parametric models

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DU Wenjing, LUO Xiao, HUANG Han, XU Shucai, ZHANG Jinhuan. Development of femur and tibia parametric models based on Chinese CT scans[J]. Journal of Tsinghua University(Science and Technology). 2019, 59(3): 211-218 https://doi.org/10.16511/j.cnki.qhdxxb.2018.26.046

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