Mechanical Comparison of an Interlocking Nail Locked with Conventional Bolts to Extended Bolts Connected with a Type‐Ia External Skeletal Fixator in a Tibial Fracture Model

Abstract

The improvement in structural properties of the ILN-ESF constructs could diminish interfragmentary motion at the fracture site and potentially improve bone healing.

Effect of Screw Type and Distribution on the Torsional Stability of 3.5 mm String of Pearls Locking Plate Constructs

“…Second, the use of a synthetic bone model may yield different results than if testing had been performed on natural bones. While likely true, synthetic bone models offer advantages including reduced variability between specimens, reduced number of samples to establish significant differences between groups and consistent evaluation of the implant independent of the bone/implant interface . Interestingly, our results are comparable to those of an earlier study in which a validated synthetic bone model was used to evaluate the torsional behavior of 3.5 mm SOP constructs .…”

“…A previously described synthetic fracture‐gap bone model (Olympian Tool, St. Johns, MI) was used . Synthetic tibial bone models (n = 32) were manufactured from 30% glass‐filled structural nylon (Part No.…”

“…All specimens were tested in torsion following a reported protocol . In brief, constructs were mounted in a dedicated torsional fixture that converted linear displacement of the actuator of the servo‐hydraulic testing machine (Instron model 1331, Instron Corp., Canton, MA) into rotation via a rack and pinion assembly.…”

“…Sample sizes were extrapolated from similar mechanical studies in our laboratory in which power analysis (power > 0.8) was performed on means (± SD) obtained during torsional testing . Data were reported as means (± SD) and compared using a single factor ANOVA.…”

Treatment of comminuted tibial shaft fractures in four dogs with the use of interlocking nail connected with type I external fixator

“…A hybrid fixator incorporating an interlocking nail and an external fixator has been recently developed to maximize treatment efficiency. The proposed construct was subjected to a series of in vitro biomechanical tests (Bernarde et al 2001, Radke et al 2006, Goett et al 2007), but the number of in vivo experiments remains low (Moses et al 2002). The aim of this study was to evaluate the effectiveness of the discussed fixator in clinical treatment of tibial fractures.…”