摘要目的 探讨外科网片的皱缩和粘连影响其作为内置式乳罩纠正轻、中度乳房下垂的术后效果,通过比较4种不同的聚丙烯网在生物相容性上的差异,找出异物反应与术后效果的关系,以便为内置式乳罩选用聚丙烯网片提供依据.方法 以实验用小型猪作为动物模型,将4种不同的聚丙烯网置入腹部皮下,90 d后采集标本,比较并发症、异物反应、胶原纤维与弹力纤维的形成,并在透射电子显微镜下观察超微结构.结果 4种聚丙烯网在生物相容性上存在差异.异物反应的程度决定生物相容性的差异,同时对术后乳房形态有显著的影响.结论 Premilene Mesh LP?作为新型的轻质量网片,生物相容性优于其他网片.

abstractsObjective Implanting surgical meshes to support breast in periareoler mammaplasty shows an excellent prospect.But shrinking of the mesh and the adhesion formation affected the postoperative shape and palpation of the breast.The aim of this study was to compare biocompatible properties of four different polypropylene meshes (Prolene(R) ; Vypro Ⅱ(R) ; Premilene Mesh (R) and Premilene Mesh LP(R)) and to discuss the inclusion criteria of meshes in this technique.Methods The study was carried out in pigs.Four different polypropylene meshes were implanted subcutaneously in belly.90 days after implantation the mesh samples were explanted,and complications,foreign-body reaction,collagen fiber and elastic fiber formation were observed,as well as ultrastructures for the biocompatible properties.Results The biocompatible properties of each mesh were different.The foreign-body reactions determined the biocompatible properties,and affected the postoperative shape greatly.Conclusions Premilene Mesh LP o as a newer low-weight polypropylene mesh,has superior properties to the others.