Comparison of Double Dynamic Compression Plating Versus Two Configurations of an Internal Veterinary Fixation Device: Results of In Vitro Mechanical Testing Using a Bone Substitute

Abstract

The veterinary fixation system has not yet proven its advantages for large animal long bone fracture repair. From the pure mechanical point of view, double DCP is the favored method for the treatment mentioned.

An In Vitro Biomechanical Comparison of a Prototype Equine Metacarpal Dynamic Compression Plate Fixation with Double Dynamic Compression Plate Fixation of Osteotomized Equine Third Metacarpal Bones

“…Four‐point bending with a uniform bending load over the entire plated region has been used in in vitro studies involving bone substitutes such as a Canevasit tube of uniform shape and thickness and a cortical bone density polyurethane foam block 24–26 . In these studies, the bone substitutes possessed no surface irregularities and length constraints, so all 4 support points could be placed distal and proximal to the plated portion of the bone substitute.…”

In Vitro Mechanical Evaluation of a Novel Pin-Sleeve System for External Fixation of Distal Limb Fractures in Horses: A Proof of Concept Study

“…Two 100 mm long bone substitute (Canevasit; Amsler und Frei, Schinznach Dorf, Switzerland, E=18 GPa) hollow cylinders (outer diameter: 47.4 mm; inner diameter: 27.4 mm) were instrumented with either a TPC or a PSC system. Each cylinder was used as a model of the equine third metacarpus 15 …”

Management of Tibial Fractures Using a Circular External Fixator in Two Calves

“…Internal fixation, although relatively expensive, provides anatomic reduction, greater stability, allows free movement of adjacent joints, and has been successfully used for tibial fracture repair in cattle 5–11 . Different intramedullary fixation techniques using single or cross pins, Rush pins, and Kuntschner nails have been used to repair tibial fractures with success, especially in young animals 6–9 .…”

“…Bone plating remains the ideal for tibial fracture repair in large animals. Dual plate fixation, especially dynamic compression plates, applied on the craniomedial and the craniodorsal aspects of the tibia provides rigid fixation in adult cattle 7–9,11 …”

“…1,4 Internal fixation, although relatively expensive, provides anatomic reduction, greater stability, allows free movement of adjacent joints, and has been successfully used for tibial fracture repair in cattle. [5][6][7][8][9][10][11] Different intramedullary fixation techniques using single or cross pins, Rush pins, and Kuntschner nails have been used to repair tibial fractures with success, especially in young animals. [6][7][8][9] The use of a clamp-rod internal fixator (CRIS 4.5/5/5 system) has yielded satisfactory results in simple tibial fractures, but failed to achieve repair of complicated fractures in cattle.…”