對於開放式復位跟骨關節內骨折固定術而言，確保手術後的穩定性是十分必要的。目前在實施關節內固定手術時提供患者選擇的骨板有新型解剖型Aplus骨板以及傳統Y型骨板兩款。本研究目的是探討兩款骨板在Sanders type II-B型骨折型態下承受負載之力學與生物力學行為，探究兩骨板能否提供足夠穩定性、比較兩者對骨折跟骨造成的應力遮蔽效應程度並對固定骨板之骨釘數量與位置對結構穩定性之影響進行探討。本研究使用COMSOL Multiphysics有限元素分析軟體建立兩種骨板在Sanders type II-B型跟骨骨折下之有限元素模型。結果顯示，Aplus骨板固定之跟骨模型，擁有相對優秀的穩定性以及較小的應力屏蔽效應。;For open reduction internal fixation of intra-articular calcaneal fractures, initial stability is essential. Currently there are two type of calcaneal plate can be chosen for calcaneal fixation, new type anatomical calcaneal plate Aplus and conventional Y plate. The objective of this study is to investigate the mechanical and biomechanical behavior of the two bone plates subjected to load in the Sanders type II-B calcaneal fracture, and to explore whether the two bone plates can provide sufficient stability. Also, compare the stress shielding effect cause by the plate and discuss the influence of the number and position of bone screws to the stability. This study used COMSOL Multiphysics finite analysis software to establish two finite element models for two kind of calcaneal plate under the Sanders type II-B calcaneal fracture. Analysis results indicate that Aplus calcaneal plate model has relatively great stiffness and causing small stress shielding effect.
