Although InterTAN(IT)nails are widely employed to treat femoral intertrochanteric fractures,the mechanism behind the tautening effect of titanium-alloy IT nails is not well understood.This study aimed to reveal the me...Although InterTAN(IT)nails are widely employed to treat femoral intertrochanteric fractures,the mechanism behind the tautening effect of titanium-alloy IT nails is not well understood.This study aimed to reveal the mechanism of this effect.A torque test experiment was conducted,with the torque value recorded and transformed to obtain the tautening effect.Then,theoretical and finite element analyses were performed to further understand the mechanism.The influence of age and pitch-difference on the tautening effect was also examined in the study,the results attributed to the pitch-varying integrated interlocking lag screw.The torque and the corresponding tautening effect drastically increase as the screw is inserted deeper during the second stage,while the torque measured in the first stage is always zero.Additionally,the tautening force increases with increasing age,this relationship helps evaluate the effect at different ages.The tautening effect also increases nearly linearly with the pitch difference,which can be adjusted during the IT design stage to select or design IT in engineering practice.展开更多
目的探讨InterTan髓内钉联合术后臀肌结合平衡能力训练治疗老年股骨粗隆间骨折的临床疗效。方法选取2022年9月至2023年9月金华市中心医院收治的老年股骨粗隆间骨折患者60例,根据随机数字表法将其分为对照组和观察组,每组30例。对照组患...目的探讨InterTan髓内钉联合术后臀肌结合平衡能力训练治疗老年股骨粗隆间骨折的临床疗效。方法选取2022年9月至2023年9月金华市中心医院收治的老年股骨粗隆间骨折患者60例,根据随机数字表法将其分为对照组和观察组,每组30例。对照组患者采用InterTan髓内钉手术及常规康复训练,观察组患者在对照组的基础上增加臀肌结合平衡能力训练。比较两组患者的Harris髋关节评分、日常生活活动(activity of daily living,ADL)评分及并发症发生率。结果术后1、3、6个月,观察组患者的Harris髋关节评分、ADL评分均显著高于对照组(P<0.05);观察组患者的术后并发症发生率显著低于对照组(χ^(2)=3.750,P=0.046)。结论InterTan髓内钉联合术后臀肌结合平衡能力训练治疗老年股骨粗隆间骨折具有良好的临床疗效。展开更多
目的比较防旋股骨近端髓内钉(proximal femoral nail antirotation,PFNA)与InterTan髓内钉在老年股骨粗隆间骨折(intertrochanteric fracture of femur,IFOF)中的应用效果及对髋关节功能的影响。方法选取2019年12月—2022年12月齐鲁医...目的比较防旋股骨近端髓内钉(proximal femoral nail antirotation,PFNA)与InterTan髓内钉在老年股骨粗隆间骨折(intertrochanteric fracture of femur,IFOF)中的应用效果及对髋关节功能的影响。方法选取2019年12月—2022年12月齐鲁医药学院附属新泰市人民医院收治的128例老年IFOF患者为研究对象,按照治疗方式的不同将其分为对照组与研究组,各64例。对照组接受PFNA内固定治疗,研究组接受InterTan髓内钉内固定治疗。比较两组术中与术后情况、Harris评分与并发症发生情况。结果两组手术及骨折愈合时间时间、术中失血量比较,差异均无统计学意义(P均>0.05);与对照组相比,术后6个月时股骨颈缩短距离研究组更短,差异有统计学意义(P<0.05)。术后6个月,研究组Harris评分为(80.65±5.52)分,高于对照组的(75.65±6.00)分,差异有统计学意义(t=4.906,P<0.05)。两组并发症发生率比较,差异无统计学意义(P>0.05)。结论与PFNA相比,InterTan髓内钉可以避免老年IFOF患者股骨颈缩短,且可促进髋关节功能的恢复。展开更多
基金financially supported by the International Research Cooperation Seed Fund of Beijing University of Technology (No.2021A10)Medical Industry Excellence and Innovation Program Fund of Beihang University (No.KG16180401)。
文摘Although InterTAN(IT)nails are widely employed to treat femoral intertrochanteric fractures,the mechanism behind the tautening effect of titanium-alloy IT nails is not well understood.This study aimed to reveal the mechanism of this effect.A torque test experiment was conducted,with the torque value recorded and transformed to obtain the tautening effect.Then,theoretical and finite element analyses were performed to further understand the mechanism.The influence of age and pitch-difference on the tautening effect was also examined in the study,the results attributed to the pitch-varying integrated interlocking lag screw.The torque and the corresponding tautening effect drastically increase as the screw is inserted deeper during the second stage,while the torque measured in the first stage is always zero.Additionally,the tautening force increases with increasing age,this relationship helps evaluate the effect at different ages.The tautening effect also increases nearly linearly with the pitch difference,which can be adjusted during the IT design stage to select or design IT in engineering practice.
文摘目的探讨InterTan髓内钉联合术后臀肌结合平衡能力训练治疗老年股骨粗隆间骨折的临床疗效。方法选取2022年9月至2023年9月金华市中心医院收治的老年股骨粗隆间骨折患者60例,根据随机数字表法将其分为对照组和观察组,每组30例。对照组患者采用InterTan髓内钉手术及常规康复训练,观察组患者在对照组的基础上增加臀肌结合平衡能力训练。比较两组患者的Harris髋关节评分、日常生活活动(activity of daily living,ADL)评分及并发症发生率。结果术后1、3、6个月,观察组患者的Harris髋关节评分、ADL评分均显著高于对照组(P<0.05);观察组患者的术后并发症发生率显著低于对照组(χ^(2)=3.750,P=0.046)。结论InterTan髓内钉联合术后臀肌结合平衡能力训练治疗老年股骨粗隆间骨折具有良好的临床疗效。
文摘目的比较防旋股骨近端髓内钉(proximal femoral nail antirotation,PFNA)与InterTan髓内钉在老年股骨粗隆间骨折(intertrochanteric fracture of femur,IFOF)中的应用效果及对髋关节功能的影响。方法选取2019年12月—2022年12月齐鲁医药学院附属新泰市人民医院收治的128例老年IFOF患者为研究对象,按照治疗方式的不同将其分为对照组与研究组,各64例。对照组接受PFNA内固定治疗,研究组接受InterTan髓内钉内固定治疗。比较两组术中与术后情况、Harris评分与并发症发生情况。结果两组手术及骨折愈合时间时间、术中失血量比较,差异均无统计学意义(P均>0.05);与对照组相比,术后6个月时股骨颈缩短距离研究组更短,差异有统计学意义(P<0.05)。术后6个月,研究组Harris评分为(80.65±5.52)分,高于对照组的(75.65±6.00)分,差异有统计学意义(t=4.906,P<0.05)。两组并发症发生率比较,差异无统计学意义(P>0.05)。结论与PFNA相比,InterTan髓内钉可以避免老年IFOF患者股骨颈缩短,且可促进髋关节功能的恢复。
