title: Initial tension loss in cerclage cables.
abstract: Cerclage cables, frequently used in the management of fractures and osteotomies, are associated with a high failure rate and significant loosening during surgery. This study compared the capacity to maintain tension of different types of orthopaedic cable systems. Multifilament Cobalt-Chrome (CoCr) cables with four different crimp/clamp devices (DePuy, Stryker, Zimmer and Smith&Nephew) and one non-metallic Nylon (Ny) cable from Kinamed were instrumented with a load cell to measure tension during insertion. Significant tension loss was observed with crimping for all cables (P<0.05). Removing the tensioner led to an additional unexpected tension loss (CoCr-DePuy: 18%, CoCr-Stryker: 29%, CoCr-Smith&Nephew: 33%, Ny: 46%, and CoCr-Zimmer: 52%). The simple CoCr (DePuy) cable system outperformed the more sophisticated locking devices due to its significantly better ability to prevent tension loss.
authors.affiliation: Centre de Recherche, Hôpital du Sacré-Coeur de Montréal, Montréal, Canada.
authors.forename: Jérémie
authors.initials: J
authors.lastname: Ménard
authors.forename: Maxime
authors.initials: M
authors.lastname: Émard
authors.forename: Fanny
authors.initials: F
authors.lastname: Canet
authors.forename: Vladimir
authors.initials: V
authors.lastname: Brailovski
authors.forename: Yvan
authors.initials: Y
authors.lastname: Petit
authors.forename: George Y
authors.initials: GY
authors.lastname: Laflamme
mesh_terms: D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D017102:Fracture Healing; D050723:Fractures, Bone / Q000601:surgery*; D006801:Humans; D016268:Internal Fixators / Q000009:adverse effects*; D055595:Mechanical Phenomena; D010027:Osteotomy / Q000295:instrumentation*; D011475:Prosthesis Failure
keywords: cable; cerclage; fractures; osteotomie; tension loss