Bucalo B D, Iriondo M
Department of Dermatology, Cleveland Clinic Florida, Fort Lauderdale 33309, USA.
Dermatol Surg. 1995 Mar;21(3):210-2. doi: 10.1111/j.1524-4725.1995.tb00154.x.
Areas of high stress in surgical closures are known to have adverse effects on wound healing.
To create a surgical model that will predict areas of high stress and allow for quantitative comparison of stress distributions in different closure geometries.
Surgical models were constructed consisting of soft polyurethane plastic. Surgical defects corresponding to A to T and O to T closures were cut in the plastic and then closed with silk interrupted sutures. The models were transilluminated with polarized light, photographed, and compared.
The A to T closure showed much less total stress than the O to T closure. The color-coded stress patterns indicate that each closure has its own distinct stress characteristics.
Photoelastic surgical models allow rapid and easy comparison of stress concentrations in different closure geometries. Such detailed information may allow the surgeon to avoid the adverse consequences of stress.
已知手术缝合处的高应力区域会对伤口愈合产生不利影响。
创建一种手术模型，该模型能够预测高应力区域，并允许对不同缝合几何形状中的应力分布进行定量比较。
构建由软质聚氨酯塑料制成的手术模型。在塑料上切割出对应于A至T和O至T缝合的手术缺损，然后用丝线间断缝合进行闭合。用偏振光对模型进行透照、拍照并比较。
A至T缝合显示的总应力比O至T缝合少得多。颜色编码的应力模式表明每种缝合都有其独特的应力特征。
光弹性手术模型能够快速、轻松地比较不同缝合几何形状中的应力集中情况。此类详细信息或许能让外科医生避免应力带来的不良后果。
