Objectives:This study aimed to investigate the symmetry of the Chinese pelvis.Methods:Computed tomography scan images of each of 50 Chinese pelvises were converted to 3D models and the left sides of the pelvises were ...Objectives:This study aimed to investigate the symmetry of the Chinese pelvis.Methods:Computed tomography scan images of each of 50 Chinese pelvises were converted to 3D models and the left sides of the pelvises were reflected on Mimics software.Then,the reflected left side model was aligned with the right side using the closest point algorithm function of Geomagic software to perform symmetry analysis.The volume and surface area of either side of the pelvises were also calculated.The mean standard deviation(SD),the mean percentage of permissible deviations within the±2mm range,the percentage differences in volume and surface area were measured to compare pelvic symmetry.In addition,the distribution of pelvic bilateral symmetry associated with both age and sex were compared.Results:The mean SD was 1.15±0.16mm and the mean percentage of permissible deviations was 90.82%±4.67%.The deviation color maps showed that the specific areas of asymmetry were primarily localized to major muscle or ligament attachment sites and the sacroiliac joint surfaces.There was no significant difference between the bilateral sides of the pelvis in either volume or surface area.Additionally,no difference in any indexes was exhibited in relation to sex and age distribution.展开更多
基金Funding information Clinical Research Startup Program of Southern Medical University by High‐level University Construction Funding of Guangdong Provincial Department of Education,Grant/Award Number:LC2016ZD032National Natural Science Foundation of China,Grant/Award Numbers:81772428,82072411+1 种基金Special Program of Guangdong Frontier and Key Technological Innovation,Grant/Award Number:2015B010125006Innovation fund cultivation project of National Clinical ResearchCenter for Orthopedics Sports Medicine&Rehabilitation,Grant/Award Number:2021‐NCRC‐CXJJPY‐06。
文摘Objectives:This study aimed to investigate the symmetry of the Chinese pelvis.Methods:Computed tomography scan images of each of 50 Chinese pelvises were converted to 3D models and the left sides of the pelvises were reflected on Mimics software.Then,the reflected left side model was aligned with the right side using the closest point algorithm function of Geomagic software to perform symmetry analysis.The volume and surface area of either side of the pelvises were also calculated.The mean standard deviation(SD),the mean percentage of permissible deviations within the±2mm range,the percentage differences in volume and surface area were measured to compare pelvic symmetry.In addition,the distribution of pelvic bilateral symmetry associated with both age and sex were compared.Results:The mean SD was 1.15±0.16mm and the mean percentage of permissible deviations was 90.82%±4.67%.The deviation color maps showed that the specific areas of asymmetry were primarily localized to major muscle or ligament attachment sites and the sacroiliac joint surfaces.There was no significant difference between the bilateral sides of the pelvis in either volume or surface area.Additionally,no difference in any indexes was exhibited in relation to sex and age distribution.
