Biomechanical Evaluation of the Influence of an Intramedullary Pin on the Stability of a Feline Ilial Fracture Model Stabilized With a Bone Plate

Abstract

No biomechanical advantage was demonstrated. The P + P constructs were not significantly stronger than plates alone in this acutely loaded cadaveric model.

Biomechanical properties of plate constructs for feline ilial fracture gap stabilization

“…Dorsal plating provides an alternative option to improve screw purchase and lower the incidence of screw loosening . However, this technique is technically demanding and may have a greater risk for iatrogenic nerve damage . Another approach for decreasing the risk of screw loosening associated with lateral plating involves the use of locking implants.…”

“…In a recent retrospective comparison of fixation methods for ilial fractures in cats, screw loosening was detected in 50% of cases treated with nonlocking plates, whereas no screw loosening occurred after locking fixation . Although some biomechanical studies evaluating fixation constructs for ilial fractures in small animals have been published, the proposed mechanical advantages of locking compared with nonlocking plate techniques remains unclear in feline ilial fractures. Double plating has been reported as a successful method of repair for comminuted ilial fractures in cats, but the biomechanics of orthogonal nonlocking plating in comminuted iliac fractures have not been evaluated.…”

Screw Loosening and Pelvic Canal Narrowing After Lateral Plating of Feline Ilial Fractures With Locking and Nonlocking Plates

“…Techniques for the repair of ilial fractures in cats include intramedullary pinning, pin and wire combination, screw and wire combination, plate and pin combination, and lateral as well as dorsal plating. Lateral plating is the most frequently reported method . A recent study evaluating cuttable plates and dynamic compression plates for lateral plating in 21 cats reported a high frequency of screw loosening (62%) and potential loss of fixation associated with more severe pelvic canal narrowing.…”

“…Lateral plating is the most frequently reported method. [7][8][9] A recent study evaluating cuttable plates and dynamic compression plates for lateral plating in 21 cats reported a high frequency of screw loosening (62%) and potential loss of fixation associated with more severe pelvic canal narrowing. However, the clinical relevance of this pelvic narrowing remains unclear.…”

Mechanical analysis of transversal iliac fracture stabilization using dynamic compression plate or screws and PMM in polyurethane bone model

“…However, approaches not tested in this study can be considered when treating such fractures (Langley-Hobbs et al, 2009;Krebs et al, 2014).…”