Security and biomechanical strength of three end-pass configurations for the terminal end of intradermal closures performed with unidirectional barbed suture material in dogs

Penny J. Regier Department of Surgery, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523.

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Daniel D. Smeak Department of Surgery, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523.

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Kirk C. McGilvray Department of Surgery, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523.

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Abstract

OBJECTIVE To compare security of continuous intradermal suture lines closed by use of barbed suture with 3 end-pass configurations or without an end-pass configuration.

SAMPLE 40 full-thickness, 4-cm-long, parasagittal wounds in canine cadavers.

PROCEDURES Each continuous intradermal closure was terminated with 1 of 3 end-pass techniques or without an end-pass configuration (control group). A servohydraulic machine applied tensile load perpendicular to the long axis of the suture line. A load-displacement curve was generated for each sample; maximum load, displacement, stiffness, mode of construct failure, and load at first suture slippage at termination (ie, terminal end of the suture line) were recorded.

RESULTS Values for maximum load, displacement, and stiffness did not differ significantly among the 3 end-pass techniques, and load at first suture slippage at termination was not significantly different among the 4 groups. A 1-pass technique slipped in 5 of 9 samples; 3 of these 5 slips caused failure of wound closure. A 2-pass technique slipped in 3 of 9 samples, none of which caused failure of wound closure. Another 2-pass technique slipped in 4 of 10 samples; 2 of these 4 slips caused failure of wound closure. The control group had slippage in 10 of 10 samples; 9 of 10 slips caused failure of wound closure

CONCLUSIONS AND CLINICAL RELEVANCE An end-pass anchor was necessary to terminate a continuous intradermal suture line, and all 3 end-pass anchor techniques were suitable to prevent wound disruption. The 2-pass technique for which none of the suture slippages caused wound closure failure provided the most reliable configuration.

Abstract

OBJECTIVE To compare security of continuous intradermal suture lines closed by use of barbed suture with 3 end-pass configurations or without an end-pass configuration.

SAMPLE 40 full-thickness, 4-cm-long, parasagittal wounds in canine cadavers.

PROCEDURES Each continuous intradermal closure was terminated with 1 of 3 end-pass techniques or without an end-pass configuration (control group). A servohydraulic machine applied tensile load perpendicular to the long axis of the suture line. A load-displacement curve was generated for each sample; maximum load, displacement, stiffness, mode of construct failure, and load at first suture slippage at termination (ie, terminal end of the suture line) were recorded.

RESULTS Values for maximum load, displacement, and stiffness did not differ significantly among the 3 end-pass techniques, and load at first suture slippage at termination was not significantly different among the 4 groups. A 1-pass technique slipped in 5 of 9 samples; 3 of these 5 slips caused failure of wound closure. A 2-pass technique slipped in 3 of 9 samples, none of which caused failure of wound closure. Another 2-pass technique slipped in 4 of 10 samples; 2 of these 4 slips caused failure of wound closure. The control group had slippage in 10 of 10 samples; 9 of 10 slips caused failure of wound closure

CONCLUSIONS AND CLINICAL RELEVANCE An end-pass anchor was necessary to terminate a continuous intradermal suture line, and all 3 end-pass anchor techniques were suitable to prevent wound disruption. The 2-pass technique for which none of the suture slippages caused wound closure failure provided the most reliable configuration.

Contributor Notes

Address correspondence to Dr. Smeak (dan.smeak@colostate.edu).
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