Mechanical comparison of two small interlocking nails in torsion using a feline bone surrogate

Autor: Dirsko J F von Pfeil, Loïc M. Déjardin, Danielle M. Marturello
Rok vydání: 2019
Předmět:
Zdroj: Veterinary Surgery. 49:380-389
ISSN: 1532-950X
0161-3499
Popis: To compare the torsional behavior of two small angle-stable interlocking nails (I-Loc and Targon) with that of locking compression plates (LCP). To evaluate the effect of implant removal on the torsional strength of feline bone surrogates.Experimental.Fracture gap constructs and intact explanted bone surrogates.Fracture gap constructs were stabilized with one of six implants (I-Loc 3 and 4, Targon 2.5 and 3.0, LCP 2.0 and 2.4) and then cyclically tested in torsion (n = 4/group). To simulate implant removal, intact surrogates with implant-specific pilot holes were then twisted to failure (n = 4/group). Torsional compliance (TC; °/Nm), angular deformation (AD; °), and failure torque (FThe I-Loc 4 had the smallest TC and AD of all constructs (P .05). The largest TC (P .05) was seen with the LCP 2.0. The Targon 2.5 had the largest AD (P .05) secondary to locking interface slippage. Targon surrogates FWe showed that I-Loc nails provided greater torsional stability than size-matched Targon nails and LCPs. Conversely, Targon 2.5 locking interface slippage may jeopardize that construct's stability. Furthermore, the significantly reduced bone surrogate torsional strength provided evidence that the large Targon bolt holes increased the risk of postexplantation iatrogenic fracture.Our results provide evidence to conclude that the small I-Loc nails may be valid alternatives to other osteosynthesis options for feline fracture repair.
Databáze: OpenAIRE
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