中华医学杂志
中華醫學雜誌
중화의학잡지
National Medical Journal of China
2011年
47期
3324-3328
,共5页
孙强%许平安%苏云%郑加法
孫彊%許平安%囌雲%鄭加法
손강%허평안%소운%정가법
股骨骨折%内固定器%生物力学
股骨骨摺%內固定器%生物力學
고골골절%내고정기%생물역학
Femoral fractures%Internal fixators%Biomechanics
目的 对锁定钢板内固定联合磷酸钙骨水泥( CPC)治疗老年性股骨转子间不稳定性骨折进行基础力学研究.方法 证实无病理缺陷、骨折、畸形或肿瘤的18具新鲜股骨标本,分为两组:实验组(右侧股骨)与对照组(左侧股骨),依据Evans分型中的ⅢA型股骨转子间骨折造模,每组各18根股骨,实验组采取股骨近端锁定钢板(LPFP)固定联合CPC固定,对照组采用单纯LPFP固定.将股骨标本固定在特殊的夹具内进行力学对比测试.结果 两者载荷·应变在600kg·m· s-2 条件下,实验组(98 ±3.6)με、对照组(127±4.4) με;3000 kg·m·s-2条件下,实验组(278±23)με、对照组(457±45)με.载荷-位移500 kg·m·s-2条件下,实验组(0.16±0.02) mm、对照组(0.23±0.04) mm;4000 kg·m·s±2条件下,实验组(2.79 ±0.59) mm、对照组(5.05±0.68) mm.扭矩-扭转变形0.1(°/cm)条件下,实验组(0.14±0.01) kg·m2·s-2、对照组(0.23±0.04) kg·m2·s-2；0.8(°/cm)条件下,实验组(3.14±0.17) kg·m2·s-2、对照组(2.57±0.08)kg·m2·s-2(P＜0.05).结论 治疗不稳定性转子间骨折锁定钢板内固定联合磷酸钙骨水泥在抗压、抗扭转方面明显优于单纯锁定钢板内固定.其立体固定,整体稳定性高.
目的 對鎖定鋼闆內固定聯閤燐痠鈣骨水泥( CPC)治療老年性股骨轉子間不穩定性骨摺進行基礎力學研究.方法 證實無病理缺陷、骨摺、畸形或腫瘤的18具新鮮股骨標本,分為兩組:實驗組(右側股骨)與對照組(左側股骨),依據Evans分型中的ⅢA型股骨轉子間骨摺造模,每組各18根股骨,實驗組採取股骨近耑鎖定鋼闆(LPFP)固定聯閤CPC固定,對照組採用單純LPFP固定.將股骨標本固定在特殊的夾具內進行力學對比測試.結果 兩者載荷·應變在600kg·m· s-2 條件下,實驗組(98 ±3.6)με、對照組(127±4.4) με;3000 kg·m·s-2條件下,實驗組(278±23)με、對照組(457±45)με.載荷-位移500 kg·m·s-2條件下,實驗組(0.16±0.02) mm、對照組(0.23±0.04) mm;4000 kg·m·s±2條件下,實驗組(2.79 ±0.59) mm、對照組(5.05±0.68) mm.扭矩-扭轉變形0.1(°/cm)條件下,實驗組(0.14±0.01) kg·m2·s-2、對照組(0.23±0.04) kg·m2·s-2；0.8(°/cm)條件下,實驗組(3.14±0.17) kg·m2·s-2、對照組(2.57±0.08)kg·m2·s-2(P＜0.05).結論 治療不穩定性轉子間骨摺鎖定鋼闆內固定聯閤燐痠鈣骨水泥在抗壓、抗扭轉方麵明顯優于單純鎖定鋼闆內固定.其立體固定,整體穩定性高.
목적 대쇄정강판내고정연합린산개골수니( CPC)치료노년성고골전자간불은정성골절진행기출역학연구.방법 증실무병리결함、골절、기형혹종류적18구신선고골표본,분위량조:실험조(우측고골)여대조조(좌측고골),의거Evans분형중적ⅢA형고골전자간골절조모,매조각18근고골,실험조채취고골근단쇄정강판(LPFP)고정연합CPC고정,대조조채용단순LPFP고정.장고골표본고정재특수적협구내진행역학대비측시.결과 량자재하·응변재600kg·m· s-2 조건하,실험조(98 ±3.6)με、대조조(127±4.4) με;3000 kg·m·s-2조건하,실험조(278±23)με、대조조(457±45)με.재하-위이500 kg·m·s-2조건하,실험조(0.16±0.02) mm、대조조(0.23±0.04) mm;4000 kg·m·s±2조건하,실험조(2.79 ±0.59) mm、대조조(5.05±0.68) mm.뉴구-뉴전변형0.1(°/cm)조건하,실험조(0.14±0.01) kg·m2·s-2、대조조(0.23±0.04) kg·m2·s-2；0.8(°/cm)조건하,실험조(3.14±0.17) kg·m2·s-2、대조조(2.57±0.08)kg·m2·s-2(P＜0.05).결론 치료불은정성전자간골절쇄정강판내고정연합린산개골수니재항압、항뉴전방면명현우우단순쇄정강판내고정.기입체고정,정체은정성고.
Objective To examine the basic biomechanics of locking plate fixation plus calcium phosphate bone cement (CPC) for unstable intertrochanteric fractures.Methods A total of 18 Chinese fresh femur specimens without pathological defects,fractures,malformations or neoplasms were collected.In accordance with the Evans classification of Ⅲ A type, the intertrochanteric fracture model was established.There were 18 femoral samples in each group.The experimental group received locking plate (LPFP) fixation plus CPC while the control group had a simple LPFP fixation.The mechanical tests were performed.Results Under different load-strain conditions,the results were as follows:600 kg · m · s-2 experimental group 98 +3.6 vs control group 127 +4.4 με; 3000 kg · m · s-2 experimental group 278 +23 vs control group 457 + 45 με.And under different load-displacement conditions,500 kg · m · s-2experimental group 0.16 +0.02 vs control group 0.23 +0.04 mm; 4000 kg · m · s-2 experimental group 2.79 ± 0.59 vs control group 5.05 + 0.68 mm.The torsional mechanical 0.1 (°/cm) properties:experimental group0.14+0.01 vs control group 0.23 +0.04 (kg · m · s-2 · m); 0.8(°/cm) experimental group 3.14 + 0.17 vs control group 2.57 ( kg · m · s -2 · m) + 0.08 ( kg · m · s- 2 · m) ( P ＜ 0.05 ).Conclusion The combined regimen of locking plate fixation and calcium phosphate cement offers remarkable advantages over simple locking plate fixation in its excellent anti-compression and anti-torsion performances in the treatment of unstable intertrochanteric fractures.With a reasonable design,it has a greater stability.
