Biomechanical comparison of canine median sternotomy closure using suture tape and orthopedic wire cerclage
Rachel E. Rivenburg, Elizabeth A. Maxwell, Judith Bertran, Carlos H. De Mello Souza, Benjamin L. Smith- General Veterinary
Abstract
Objective
To compare the mechanical properties of suture tape and orthopedic wire cerclage in an ex vivo canine median sternotomy model.
Study design
Ex vivo.
Animals
Twelve large‐breed canine cadaveric sternums.
Methods
Median sternotomies were performed, leaving the manubrium intact. The specimens were randomly assigned to group W (20‐gauge stainless steel orthopedic wire cerclage in a figure‐of‐eight pattern) or group ST (suture tape in a figure‐of‐eight pattern). Each specimen was laterally distracted until failure using an electrodynamic materials‐testing system.
Results
No differences were observed for displacement, yield load, maximum load, implant failure between the groups. The orthopedic wire construct was stiffer than the suture tape construct.
Conclusion
Suture tape was biomechanically similar to orthopedic wire cerclage for sternotomy closure in dogs, although wire constructs were stiffer.
Clinical significance
Suture tape may represent an alternative to cerclage wire for sternotomy closure in dogs. Additional studies evaluating its clinical use are needed.