Tensile strength of wound closure with cyanoacrylate glue.

2-Octyl cyanoacrylate tissue adhesive is increasingly being used for closure of traumatic lacerations. Data regarding the strength of incisions closed with 2-octyl cyanoacrylate are limited. We compared the strength of disruption of closure with glue with that of more conventional methods of wound closure. Segments of fresh porcine skin measuring 3.5 x 10 cm were approximated by one of four methods: 1) 2-octyl cyanoacrylate glue, 2) surgical staples, 3) 0.5 inch Steri-Strips, and 4) interrupted 4-0 poliglecaprone 25 sutures in a subcuticular fashion. Fifteen specimens were used to test each type of closure. The strength of closure was tested on an Instron 4502 tensionometer. The peak force required for disruption of the closure was recorded and the strength of the closure was compared. Staples provided the strongest closure. Skin glue proved superior to Steri-Strips but inferior to stapled closure. The difference between skin glue and suture closure was not statistically significant (P = 0.12). Patterns of failure differed between the groups. Skin glue failed because of disruption of the skin-glue interface. 2-Octyl cyanoacrylate glue provides a wound closure that is similar to closure with an interrupted subcuticular absorbable suture. This study validates the clinical use of skin glue for closure of surgical incisions. The technique should be used with caution in areas of the body that are subject to tension.