目的:比较采用动力髋螺钉(dynamic hip screw,DHS)、Gamma钉和防旋型股骨近端髓内钉(proximal femoral nail anti-rotation,PFNA)治疗老年骨质疏松性股骨粗隆间骨折的效果,探讨老年骨质疏松性股骨粗隆间骨折合理的内固定治疗方法。方法:...目的:比较采用动力髋螺钉(dynamic hip screw,DHS)、Gamma钉和防旋型股骨近端髓内钉(proximal femoral nail anti-rotation,PFNA)治疗老年骨质疏松性股骨粗隆间骨折的效果,探讨老年骨质疏松性股骨粗隆间骨折合理的内固定治疗方法。方法:2000年2月至2006年10月,分别采用DHS(DHS组,n=59)、Gamma钉(Gamma钉组,n=46)和PFNA(PFNA组,n=53)治疗并随访老年骨质疏松性股骨粗隆间骨折患者158例。比较3组患者手术情况、术中和术后并发症、疗效及骨折愈合时间。结果:各组间平均手术时间和术中出血量两两比较均有统计学差异(P<0.01)。三组术中、术后并发症发生率有统计学差异(P<0.05),PFNA组术中、术后并发症发生率比DHS组和Gamma钉组低。DHS组、Gamma钉组和PFNA组优良率分别为86.44%、84.78%和90.57%,组间疗效差异无统计学意义(P>0.05)。PFNA组与DHS组骨折愈合时间有统计学差异(P<0.01),而Gamma钉组与PFNA组间无统计学差异(P>0.05)。结论:应用DHS、Gamma钉和PFNA治疗老年股骨粗隆间骨折,在疗效方面无明显差异。PFNA内固定平均手术时间最短,术中出血量最少,术中、术后并发症发生率低,骨折愈合时间短。PFNA对骨折端的血循环影响和骨质破坏较小,固定更为牢靠,是治疗老年骨质疏松性股骨粗隆间骨折的合理手术方法。展开更多
Objective: To treat humerus fracture with three dimensional pattern and finite element analysis, providing mechanical basis for treating humerus fracture. Methods: Humerus pattern was established based on the CT image...Objective: To treat humerus fracture with three dimensional pattern and finite element analysis, providing mechanical basis for treating humerus fracture. Methods: Humerus pattern was established based on the CT images, and calculation was done by ANSYS5. 6 software. Three dimensional ten-node tetrahedron unit was selected and were divided into 2 729 nodes, 49 041 units. Distribution and amount of axial compression of humerus were analyzed when clip angle was 30°, 45°, 90° between fracture face and axial line with fixed X, Y, Z directions. Results: The distribution of stress was greatly different between fracture face and non fracture face. Stress in fracture part was fairly concentrated with incomplete symmetric distribution around the center of fracture face; Greater stress distributed in the regions 10 mm from fracture face, which was 2-3 times that of other stress regions. Conclusion: Required load must be estimated under various conditions as to select the suitable internal fixation implants during the treatment of humerus fracture, which can provide helpful stress environment for fracture healing.展开更多
目的:探讨动力髋螺钉(dynamic hip screw,DHS)结合形状记忆合金弓齿钉内固定治疗股骨粗隆下Sein-sheimerⅤ型粉碎性骨折的临床疗效。方法:2005年6月至2007年1月收治12例股骨粗隆下粉碎性骨折患者,其中男8例,女4例;年龄31～65岁,平均53...目的:探讨动力髋螺钉(dynamic hip screw,DHS)结合形状记忆合金弓齿钉内固定治疗股骨粗隆下Sein-sheimerⅤ型粉碎性骨折的临床疗效。方法:2005年6月至2007年1月收治12例股骨粗隆下粉碎性骨折患者,其中男8例,女4例;年龄31～65岁,平均53岁。受伤原因:车祸伤7例,高处坠落伤4例,重物砸伤1例。按Seinsheimer分类均为Ⅴ型。均采用动力髋螺钉结合形状记忆合金弓齿钉内固定治疗。结果:12例患者均获得随访,时间20～38个月,平均28个月。全部病例均获得骨性愈合,平均愈合时间3.3个月(3～4.5个月)。未发生深部感染、下肢深静脉血栓、肺栓塞、骨不连等并发症。按Merled'Aubigne髋关节功能评分为(16.75±1.14)分,其中优4例,良8例。结论:动力髋螺钉结合形状记忆合金弓齿钉治疗股骨粗隆下SeinsheimerⅤ型骨折,复位满意,固定牢靠,是治疗股骨粗隆下骨折可选择的理想治疗方法之一。展开更多
文摘目的:比较采用动力髋螺钉(dynamic hip screw,DHS)、Gamma钉和防旋型股骨近端髓内钉(proximal femoral nail anti-rotation,PFNA)治疗老年骨质疏松性股骨粗隆间骨折的效果,探讨老年骨质疏松性股骨粗隆间骨折合理的内固定治疗方法。方法:2000年2月至2006年10月,分别采用DHS(DHS组,n=59)、Gamma钉(Gamma钉组,n=46)和PFNA(PFNA组,n=53)治疗并随访老年骨质疏松性股骨粗隆间骨折患者158例。比较3组患者手术情况、术中和术后并发症、疗效及骨折愈合时间。结果:各组间平均手术时间和术中出血量两两比较均有统计学差异(P<0.01)。三组术中、术后并发症发生率有统计学差异(P<0.05),PFNA组术中、术后并发症发生率比DHS组和Gamma钉组低。DHS组、Gamma钉组和PFNA组优良率分别为86.44%、84.78%和90.57%,组间疗效差异无统计学意义(P>0.05)。PFNA组与DHS组骨折愈合时间有统计学差异(P<0.01),而Gamma钉组与PFNA组间无统计学差异(P>0.05)。结论:应用DHS、Gamma钉和PFNA治疗老年股骨粗隆间骨折,在疗效方面无明显差异。PFNA内固定平均手术时间最短,术中出血量最少,术中、术后并发症发生率低,骨折愈合时间短。PFNA对骨折端的血循环影响和骨质破坏较小,固定更为牢靠,是治疗老年骨质疏松性股骨粗隆间骨折的合理手术方法。
文摘Objective: To treat humerus fracture with three dimensional pattern and finite element analysis, providing mechanical basis for treating humerus fracture. Methods: Humerus pattern was established based on the CT images, and calculation was done by ANSYS5. 6 software. Three dimensional ten-node tetrahedron unit was selected and were divided into 2 729 nodes, 49 041 units. Distribution and amount of axial compression of humerus were analyzed when clip angle was 30°, 45°, 90° between fracture face and axial line with fixed X, Y, Z directions. Results: The distribution of stress was greatly different between fracture face and non fracture face. Stress in fracture part was fairly concentrated with incomplete symmetric distribution around the center of fracture face; Greater stress distributed in the regions 10 mm from fracture face, which was 2-3 times that of other stress regions. Conclusion: Required load must be estimated under various conditions as to select the suitable internal fixation implants during the treatment of humerus fracture, which can provide helpful stress environment for fracture healing.
文摘目的:探讨动力髋螺钉(dynamic hip screw,DHS)结合形状记忆合金弓齿钉内固定治疗股骨粗隆下Sein-sheimerⅤ型粉碎性骨折的临床疗效。方法:2005年6月至2007年1月收治12例股骨粗隆下粉碎性骨折患者,其中男8例,女4例;年龄31～65岁,平均53岁。受伤原因:车祸伤7例,高处坠落伤4例,重物砸伤1例。按Seinsheimer分类均为Ⅴ型。均采用动力髋螺钉结合形状记忆合金弓齿钉内固定治疗。结果:12例患者均获得随访,时间20～38个月,平均28个月。全部病例均获得骨性愈合,平均愈合时间3.3个月(3～4.5个月)。未发生深部感染、下肢深静脉血栓、肺栓塞、骨不连等并发症。按Merled'Aubigne髋关节功能评分为(16.75±1.14)分,其中优4例,良8例。结论:动力髋螺钉结合形状记忆合金弓齿钉治疗股骨粗隆下SeinsheimerⅤ型骨折,复位满意,固定牢靠,是治疗股骨粗隆下骨折可选择的理想治疗方法之一。
