Objective Biomechanical properties of the anterior cervical pedicle screw artificial vertebral system and conventional anterior screw plate system were analyzed in lower cervical spine by finite element.Methods CT ima...Objective Biomechanical properties of the anterior cervical pedicle screw artificial vertebral system and conventional anterior screw plate system were analyzed in lower cervical spine by finite element.Methods CT images were obtained from a 38-year-old female volunteer.Following models were established and analyzed by Mimics14.0,Geomagic Studio 2013,ANSYS 14.0 software:the intact cervical model(C3-C7),corpectomy of C5 model,the model of conventional anterior screw plate system fixation(AP),and the model of anterior transpedicular screw artificial vertebral body sys-展开更多
目的探索股骨近端防旋髓内钉(proximal femoral nail anti-rotatio,PFNA)内固定术老年患者术后营养风险相关因素并建立营养不良预测模型。方法纳入2021年1月至2024年6月于我院接受PFNA内固定术老年患者574例,分为营养不良组(389例)和营...目的探索股骨近端防旋髓内钉(proximal femoral nail anti-rotatio,PFNA)内固定术老年患者术后营养风险相关因素并建立营养不良预测模型。方法纳入2021年1月至2024年6月于我院接受PFNA内固定术老年患者574例,分为营养不良组(389例)和营养良好组(185例),比较2组患者生理、心理、社会、经济、环境、医学等因素共39个指标的差异,采用Logistic分析筛选营养风险危险因素并构建列线图模型。结果年龄偏高、BMI指数偏低、术后SAS评分偏高、骨折前较少锻炼、农民、经济压力较高,及术前白蛋白、前蛋白、血红蛋白偏低,骨折前Barthel指数偏低是PFNA内固定术患者营养风险的独立危险因素(P<0.05)。纳入上述因素构建列线图预测模型,预测该类患者发生营养不良风险的AUC(95%CI)=0.995(0.987~1.000),在阈概率>0.02时采用本模型预测PFNA内固定术患者术后营养不良风险均可临床获益。结论基于年龄、BMI指数、经济压力、骨折前锻炼情况及术前白蛋白等指标构建老年患者PFNA内固定术术后营养风险预测模型,有较高的准确性和临床应用价值。展开更多
基金supported by Natural Science Foundation of China(31170903)
文摘Objective Biomechanical properties of the anterior cervical pedicle screw artificial vertebral system and conventional anterior screw plate system were analyzed in lower cervical spine by finite element.Methods CT images were obtained from a 38-year-old female volunteer.Following models were established and analyzed by Mimics14.0,Geomagic Studio 2013,ANSYS 14.0 software:the intact cervical model(C3-C7),corpectomy of C5 model,the model of conventional anterior screw plate system fixation(AP),and the model of anterior transpedicular screw artificial vertebral body sys-
文摘目的探索股骨近端防旋髓内钉(proximal femoral nail anti-rotatio,PFNA)内固定术老年患者术后营养风险相关因素并建立营养不良预测模型。方法纳入2021年1月至2024年6月于我院接受PFNA内固定术老年患者574例,分为营养不良组(389例)和营养良好组(185例),比较2组患者生理、心理、社会、经济、环境、医学等因素共39个指标的差异,采用Logistic分析筛选营养风险危险因素并构建列线图模型。结果年龄偏高、BMI指数偏低、术后SAS评分偏高、骨折前较少锻炼、农民、经济压力较高,及术前白蛋白、前蛋白、血红蛋白偏低,骨折前Barthel指数偏低是PFNA内固定术患者营养风险的独立危险因素(P<0.05)。纳入上述因素构建列线图预测模型,预测该类患者发生营养不良风险的AUC(95%CI)=0.995(0.987~1.000),在阈概率>0.02时采用本模型预测PFNA内固定术患者术后营养不良风险均可临床获益。结论基于年龄、BMI指数、经济压力、骨折前锻炼情况及术前白蛋白等指标构建老年患者PFNA内固定术术后营养风险预测模型,有较高的准确性和临床应用价值。
