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Background.  While there are clear recommendations for the technique and suture material for abdominal fascial closure, surgeons may have personal preferences arising from prevoius experiences or influenced during training. The decision of which suture material to use should not influence the outcome of fascial closure. The objective of this study is to analyze the influence of time and tension on the mechanical properties of sutures used for abdominal fascial closure.  Methods.  Polyglactin 910, polypropylene, and polydioxanone sutures were exposed to 8 and 10 newtons of constant tensile strain during a period of 7 and 14 days. They were then mechanically tested to assess changes in their properties regarding strength and deformation.  Results.  No significant changes were observed in maximum tensile force or extension within the different suture groups. Regarding deformation, polypropylene and polydioxanone did not exhibit alterations in their curve behavior, while polyglactin 910 did exhibit changes compared to the control group, as seen by the elevation in its Young modulus when manipulated.  Conclusions.  Our study finds that while different sutures behave differently, nor time or tension have a negative effect on their biomechanical resilience and can withstand tensile strengths well above any physiological or pathological condition.

Biomechanical evaluation of suture materials used for abdominal fascial closure