An in vitro biomechanical study of bone plate and interlocking nail in a canine diaphyseal femoral fracture model

Abstract

Structural properties and interfragmentary shear motion analysis demonstrated a much higher rigidity in the IN-bone than in the DCP-bone constructs.

A Mechanical Comparison of the Locking Compression Plate (LCP) and the Low Contact-Dynamic Compression Plate (DCP) in an Osteoporotic Bone Model

“…This method has been recommended by the authors in a number of previous mechanical studies. [6][7][8][9][10] Initially quasi-static testing was carried out on all specimens using an Instron 4507 universal testing machine. The specimens were first tested in compression to a maximum load of 450 N. The compression force was applied along the central axis of the bone specimen.…”

Radiographic Assessment of Implant Failures of Titanium 3.5 LCP vs. 4.5 LCP Used for Flexible Bridging Osteosynthesis of Large Segmental Femoral Diaphyseal Defects in a Miniature Pig Model

“…A longer bone plate is generally more suitable because forces are more distributed; there is less tension at the place of absent bone (Rozbruch et al 1998;Stoffel et al 2003) because concentration of bending forces is prevented at the site of the hollow opening (unfilled with screw) of the plate. The size (robustness) of the bone plate that may be used in given case for fixation, however, tends to be limited by the size of the experimental animal, while a suitable alternative appears to be the use of larger-sized bone plates (Bernarde et al 2001). Although we found 3 cases of bone plate breaking in the group of pigs with segmental femoral osteotomy fixated using the five-hole 4.5 mm titanium LCP, we did not find a significant difference in the occurrence of fixation failure in the form of broken LCP compared to the group of animals with the bone defect stabilized using the six-hole 3.5 mm LCP.…”

Propriedades mecânicas de um sistema de osteossíntese de estabilidade relativa

“…Osteosynthesis methods of relative stability are used in the surgical treatment of fractures due to its properties' mechanical behavior, once a lower level of stiffness enables fragments to move on fracture core, thus stimulating osteogenesis, and this fact has led to the development of a number of experimental studies comparing rigid plates to blocked intramedullary nails of relative stability (4)(5)(6)(7)(8) . External fixation systems may be used as an osteosynthesis method of relative stability and are dependent on the kind of assembly and on the accessories employed to enhance stability (9) .…”