Initial tension loss in cerclage cables.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 23618753.
- Also identified by DOI 10.1016/j.arth.2013.03.014.
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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.
Medical subject headings
- Fracture Fixation, Internal
- Fractures, Bone
- Internal Fixators
- Osteotomy
- Prosthesis Failure