Biomechanical Comparison of a Locking Compression Plate Combined With an Intramedullary Pin or a Polyetheretherketone Rod in a Cadaveric Canine Tibia Gap Model

Effect of monocortical and bicortical screw numbers on the properties of a locking plate-intramedullary rod configuration

“…No screw loosening or pull out was observed in our constructs. This is in direct contrast to our preceding study, where 70% of non-locking screw constructs failed by screw pull out (7) but in concordance with the findings of two recent studies evaluating cyclic loading and load to failure of locking-plate rod constructs (21,28). Comparison of the mean stiffness data between our current and previous study (7) for constructs with the same configuration of monocortical and bicortical screws revealed similar stiffness after 6000 cycles but an increase in stiffness in locking constructs at 63000 cycles.…”

Dual Bone Fixation: A Biomechanical Comparison of 3 Implant Constructs in a Mid‐Diaphyseal Fracture Model of the Feline Radius and Ulna

“…All screws were hand tightened (T6 screwdriver, Synthes GmbH). A 5 mm radial and ulnar ostectomy centered over the calculated midpoint of the radius (and holes 5 and 6) was performed using a hand saw (0.4 mm Hard Back Saw, Veterinary Instrumentation, Sheffield, UK) …”

An anatomical study of plate‐rod fixation in feline tibiae

“…Although not investigated, we assume that these results can be extrapolated to a wider range of IM canals, as long as the diameter of the IM pin is selected to fill 40%, 45%, or 50% of the medullary canal. The influence of pin diameter on plate rod constructs has been extensively studied in canine femora and tibia . Authors of these studies concluded that the IMP diameter should approximate 35%‐40% of the medullary cavity, and that for each 10% increase in canal fill, plate strain was reduced by about 20% .…”