title: Biomechanical evaluation of adjunctive cerclage wire fixation for the prevention of periprosthetic femur fractures using cementless press-fit total hip replacement.
abstract: Periprosthetic femoral fractures are a common complication associated with cementless press-fit total hip arthroplasty. The use of prophylactic cerclage wire fixation has been advocated to reduce this complication. The objective of this study was to evaluate whether a double loop cerclage wire, used as adjunctive fixation, increased the peak torsional load to failure in femora implanted with press-fit cementless stems. Peak torsional load to failure was compared between femora without adjunctive fixation and femora receiving a 1 mm double loop cerclage wire placed proximally to the lesser trochanter. Femora treated with adjunctive cerclage wire fixation failed at 20% greater peak torque (P = 0.0001). In conclusion, a double loop cerclage wire may aid in the prevention of periprosthetic fractures associated with press-fit cementless femoral stems.
authors.affiliation: Comparative Orthopedics Biomechanics Laboratory, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States.
authors.forename: Scott A
authors.initials: SA
authors.lastname: Christopher
authors.affiliation: Comparative Orthopedics Biomechanics Laboratory, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States.
authors.forename: Stanley E
authors.initials: SE
authors.lastname: Kim
authors.affiliation: Randall B. Terry Companion Animal Veterinary Medical Center, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States.
authors.forename: Simon
authors.initials: S
authors.lastname: Roe
authors.affiliation: Comparative Orthopedics Biomechanics Laboratory, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States. Electronic address: antonio.pozzi@uzh.ch.
authors.forename: Antonio
authors.initials: A
authors.lastname: Pozzi
mesh_terms: D000818:Animals; D019644:Arthroplasty, Replacement, Hip / Q000379:methods / Q000662:veterinary*; D001696:Biomechanical Phenomena; D001864:Bone Wires / Q000662:veterinary*; D004285:Dogs; D005264:Femoral Fractures / Q000517:prevention & control / Q000662:veterinary*; D005269:Femur; D057068:Periprosthetic Fractures / Q000517:prevention & control / Q000662:veterinary*
keywords: Cerclage; Periprosthetic fracture; Press fit; Total hip arthroplasty