Compression Capability of Cerclage Fixation Systems: A Biomechanical Study

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Abstract
Cerclage wire or tension band techniques are frequently complicated by broken wires or inadequate bony stabilization. The fixation capabilities of various cerclage systems were defined in this study by measuring the maximum compression forces generated by the different methods as well as their ultimate strengths. Parham bands and swage-lock titanium cables were found to exhibit the greatest fixation potential and highest ultimate strengths. Cerclage fixation using stainless steel wire was found to be enhanced by using a modified square knot. Mersilene tape was found to have fixation capabilities of similar magnitude to 20 gauge stainless wire secured with a twist knot The polypropylene and nylon cable ties tested showed no advantage when compared to the other systems.

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