医用生物力学
醫用生物力學
의용생물역학
JOURNAL OF MEDICAL BIOMECHANICS
2009年
6期
444-447
,共4页
成人%桡骨头切除%并发症%三维有限元分析
成人%橈骨頭切除%併髮癥%三維有限元分析
성인%뇨골두절제%병발증%삼유유한원분석
Adult%Resection of head radius%Complication%Three-dimensional limited element analysis
目的 通过三维有限元模拟研究桡骨头切除术后并发症的原因和机理.方法 用三维有限元分析法研究桡骨头的应力传导作用,以及桡骨头切除后应力传导分布改变对肘、腕关节稳定性的影响.结果 正常情况,经桡骨头传导的应力值约占肘关节总应力值的58%,经过肱尺关节传导的应力值约占肘关节总应力值36.85%.桡骨头切除后,肱尺关节外侧部分承受的应力值约占肘关节总应力值的43%,内侧部分的应力值约占肘关节总应力值的21.6%,和桡骨头切除前相比较,外侧较内侧增加的幅度显著增大.结论 桡骨头在肘关节应力传导中占据了主导地位,桡骨头切除后破坏了肘关节的正常应力分布,对肘、腕关节的稳定性有较大的影响.临床上应严格掌握桡骨头切除术的适应证.
目的 通過三維有限元模擬研究橈骨頭切除術後併髮癥的原因和機理.方法 用三維有限元分析法研究橈骨頭的應力傳導作用,以及橈骨頭切除後應力傳導分佈改變對肘、腕關節穩定性的影響.結果 正常情況,經橈骨頭傳導的應力值約佔肘關節總應力值的58%,經過肱呎關節傳導的應力值約佔肘關節總應力值36.85%.橈骨頭切除後,肱呎關節外側部分承受的應力值約佔肘關節總應力值的43%,內側部分的應力值約佔肘關節總應力值的21.6%,和橈骨頭切除前相比較,外側較內側增加的幅度顯著增大.結論 橈骨頭在肘關節應力傳導中佔據瞭主導地位,橈骨頭切除後破壞瞭肘關節的正常應力分佈,對肘、腕關節的穩定性有較大的影響.臨床上應嚴格掌握橈骨頭切除術的適應證.
목적 통과삼유유한원모의연구뇨골두절제술후병발증적원인화궤리.방법 용삼유유한원분석법연구뇨골두적응력전도작용,이급뇨골두절제후응력전도분포개변대주、완관절은정성적영향.결과 정상정황,경뇨골두전도적응력치약점주관절총응력치적58%,경과굉척관절전도적응력치약점주관절총응력치36.85%.뇨골두절제후,굉척관절외측부분승수적응력치약점주관절총응력치적43%,내측부분적응력치약점주관절총응력치적21.6%,화뇨골두절제전상비교,외측교내측증가적폭도현저증대.결론 뇨골두재주관절응력전도중점거료주도지위,뇨골두절제후파배료주관절적정상응력분포,대주、완관절적은정성유교대적영향.림상상응엄격장악뇨골두절제술적괄응증.
Objective To adopt a three-dimensional limited element analytic method to research into the cause and mechanism of the complications taking place after resection of head radius.Method To adopt a three-dimensional limited element analytic method to research into the stress transmission action of the head radi-us and the distribution alteration of the stress transmission after resection of head radius impacting on the stability of elbow and wrist.Result In normal cases,the stress value transmitted via head of radius takes 58% of the stress placed,36.85% via humeroulnar joint.The head of radius places a leading role in the stress transmission of the elbow joint.After rasection of the head of radius,the lateral of humeroulnar joint bears about 43% of the stress placed while the medial part bears about 21.6% of the stress.To compare with that before the resection of the head of radius the stress on the lateral is obviously increased more than the medial part.Conclusions The head of radius places a leading role in the stress transm ission of the el-bow joint.The resection of the head radius breaks the normal distribution of the stress on the elbow joint and produces great effect on the stability of the elbow joint and wrist joint.Therefore,in clinics we should pay great attention to the indication of rasection of the head of radius.
