中国组织工程研究
中國組織工程研究
중국조직공정연구
Journal of Clinical Rehabilitative Tissue Engineering Research
2013年
39期
6954-6961
,共8页
黄煊怀%廖瑛%范伟杰%陈志伟
黃煊懷%廖瑛%範偉傑%陳誌偉
황훤부%료영%범위걸%진지위
骨科植入物%骨与关节生物力学%儿童%股骨颈%股骨颈螺钉%骨折%器械%内固定%生物力学%抗压能力%抗扭能力%省级基金
骨科植入物%骨與關節生物力學%兒童%股骨頸%股骨頸螺釘%骨摺%器械%內固定%生物力學%抗壓能力%抗扭能力%省級基金
골과식입물%골여관절생물역학%인동%고골경%고골경라정%골절%기계%내고정%생물역학%항압능력%항뉴능력%성급기금
背景：由于骺板在股骨的生长发育过程中有重要的作用，内固定的设计要求尽量避免对骺板的损伤，因此对儿童股骨骺板的定位显得尤其重要。<br> 目的：探讨新型儿童股骨颈螺钉固定儿童股骨颈骨折的生物力学性能。<br> 方法：由南华大学解剖室提供的6具儿童尸体上取下股骨12根，X射线排除骨病后，分别采用3枚新型儿童股骨颈螺钉固定；3枚2.0 mm克氏针固定。分别进行生物力学实验，测试其轴向压缩、扭转刚度。<br> 结果与结论：轴向压缩刚度及最大3 N?m 的扭转力矩下扭转刚度，儿童股骨颈螺钉分别为(190.74±20.88) N/mm、(0.18±0.045) N?m/(°)，克氏针为(138.95±15.19) N/mm、(0.120±0.036) N?m/(°)，两者比较差异均有显著性意义(P<0.05)；显示儿童股骨颈螺钉的抗压能力和抗扭能力上明显强于克氏针。实验说明儿童股骨颈螺钉是一种符合儿童股骨近端解剖学特点，能够满足儿童股骨颈骨折需要的新型内固定器械，具有良好的生物力学性能。
揹景：由于骺闆在股骨的生長髮育過程中有重要的作用，內固定的設計要求儘量避免對骺闆的損傷，因此對兒童股骨骺闆的定位顯得尤其重要。<br> 目的：探討新型兒童股骨頸螺釘固定兒童股骨頸骨摺的生物力學性能。<br> 方法：由南華大學解剖室提供的6具兒童尸體上取下股骨12根，X射線排除骨病後，分彆採用3枚新型兒童股骨頸螺釘固定；3枚2.0 mm剋氏針固定。分彆進行生物力學實驗，測試其軸嚮壓縮、扭轉剛度。<br> 結果與結論：軸嚮壓縮剛度及最大3 N?m 的扭轉力矩下扭轉剛度，兒童股骨頸螺釘分彆為(190.74±20.88) N/mm、(0.18±0.045) N?m/(°)，剋氏針為(138.95±15.19) N/mm、(0.120±0.036) N?m/(°)，兩者比較差異均有顯著性意義(P<0.05)；顯示兒童股骨頸螺釘的抗壓能力和抗扭能力上明顯彊于剋氏針。實驗說明兒童股骨頸螺釘是一種符閤兒童股骨近耑解剖學特點，能夠滿足兒童股骨頸骨摺需要的新型內固定器械，具有良好的生物力學性能。
배경：유우후판재고골적생장발육과정중유중요적작용，내고정적설계요구진량피면대후판적손상，인차대인동고골후판적정위현득우기중요。<br> 목적：탐토신형인동고골경라정고정인동고골경골절적생물역학성능。<br> 방법：유남화대학해부실제공적6구인동시체상취하고골12근，X사선배제골병후，분별채용3매신형인동고골경라정고정；3매2.0 mm극씨침고정。분별진행생물역학실험，측시기축향압축、뉴전강도。<br> 결과여결론：축향압축강도급최대3 N?m 적뉴전력구하뉴전강도，인동고골경라정분별위(190.74±20.88) N/mm、(0.18±0.045) N?m/(°)，극씨침위(138.95±15.19) N/mm、(0.120±0.036) N?m/(°)，량자비교차이균유현저성의의(P<0.05)；현시인동고골경라정적항압능력화항뉴능력상명현강우극씨침。실험설명인동고골경라정시일충부합인동고골근단해부학특점，능구만족인동고골경골절수요적신형내고정기계，구유량호적생물역학성능。
BACKGROUND:As the epiphyseal plate has an important role in the growth and development of femur, the design of internal fixation should avoid the damage to the epiphyseal plate. Therefore, the positioning of pediatric femoral epiphyseal plate is particularly important. <br> OBJECTIVE:To investigate the biomechanical property of the new femur neck screw internal fixation in treatment of children femoral neck fracture. <br> METHODS:Twelve femurs were col ected from six fresh children cadavers provided by Dissecting Room of University of South China. After exclusion of bone disease with X-ray film, three new children femoral neck screws and three Kirschner wires with the diameter of 2.0 mm were used for fixation. The biomechanical tests were conducted to detect the axial compression and torsion stiffness. <br> RESULTS AND CONCLUSION:In the children femoral neck screw group, the axial compression stiffness and torsion stiffness under the torsional torque of maximum 3 N?m were (190.74±20.88) N/mm and (0.18±0.045) N?m/° respectively;(138.95±15.19) N/mm and (0.120±0.036) N?m/° respectively in the Kirschner wire group;there were significant differences in the axial compression stiffness and torsion stiffness between two groups (P<0.05). The results showed that the compressive strength and torsional capacity of the children femoral neck screw were strong than those of Kirschner wire. The experiment suggested that the femoral neck screw for children is a new type of ideal internal fixation device which consist with the anatomical features of children proximal femur and can meet the requirement of children femoral neck fracture with good biomechanical property.
