In vitro comparison of stiffness of plate fixation of radii from large- and small-breed dogs

Gauthier, C. M.; Conrad, Bryan P.; Lewis, Daniel D.; Pozzi, Antonio

doi:10.2460/ajvr.72.8.1112

Cited by 10 publications

(4 citation statements)

References 33 publications

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“…In fact, small breed radii plated with dynamic compression plates were less stiff than any plate used on large breed radii and cut-to-length plates on small breed radii. The authors of this biomechanical study concluded that complications typically associated with small breed radial fractures cannot be ascribed to an overly stiff radius-bone plate construct (12). These results suggest that other biological factors may contribute to the high incidence of osteopenia and delayed union in fractures of small dogs compared to their larger counterparts.…”

Section: Introductionmentioning

confidence: 84%

“…Highly stiff plates screwed to canine femurs may induce greater progression of osteoporosis compared to plates with greater elasticity (and greater bone loading); leading to the theory that stiff bone plating of radial fractures contributes to the high incidence of delayed union with these fractures (11). However, a recent ex vivo investigation into the stiffness of bone-plated radial fractures in cadavers failed to identify increased stiffness in small breed cadaveric radii compared to larger-breed radii following bone-plating and biomechanical testing (12). In fact, small breed radii plated with dynamic compression plates were less stiff than any plate used on large breed radii and cut-to-length plates on small breed radii.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Augmentation of diaphyseal fractures of the radius and ulna in toy breed dogs using a free autogenous omental graft and bone plating

Baltzer

Cooley²,

Warnock³

et al. 2015

Vet Comp Orthop Traumatol

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Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Augmentation of diaphyseal fractures of the radius and ulna in toy breed dogs using a free autogenous omental graft and bone plating

Baltzer

Cooley²,

Warnock³

et al. 2015

Vet Comp Orthop Traumatol

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show abstract

“…6 A study observed no difference in the standardized stiffness of the radius after plate fixation between small and large breeds of dogs and that the potential for bone resorption in the radius of small breeds was less due to stress shielding. 7 However, it has also been reported that implants impair the blood supply to the cortical bone beneath the plate. 8,9 Cortical bone porosity was reported to have occurred within 12 weeks of internal fixation due to impaired blood flow, and that areas with impaired blood flow were associated with remodelling areas.…”

Section: Introductionmentioning

confidence: 99%

A Retrospective Study of Postoperative Development of Implant-Induced Osteoporosis in Radial–Ulnar Fractures in Toy Breed Dogs Treated with Plate Fixation

Muroi

Shimada

Murakami

et al. 2021

Vet Comp Orthop Traumatol

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Objective This study aimed to evaluate implant-induced osteoporosis (IIO) development in toy breed dogs treated using internal fixation with digital radiographs as the index of pixel values. Study Design There were 226 cases (236 limbs) of toy breed dogs with radial–ulnar fractures. Pixel values were measured on radiographs immediately, 2 weeks and 1 to 12 months after surgery. The ratio of pixel values (PVR) represented the bone mineral areal density based on the humeral condyle in the same image. The dogs were grouped based on the fixation methods, age and status of destabilization. Results There was a significant decrease in the PVR at 1 to 12 months postoperatively for all cases. There were not any significant differences in PVR of antebrachial fractures between those repaired with plates using locking head screws, cortex screws or a combination of locking and cortex screws. Implant-induced osteoporosis persisted at 1 to 12 months postoperatively in dogs aged ≧6 months, while the PVR increased after 3 months in dogs aged <6 months. Based on the destabilization method, there was a significant increase in the PVR at 3 months in the plate removal group. Conclusion This study suggests that IIO occurs in small dogs treated with plates and screws. Moreover, patients aged < 6 months showed an early postoperative recovery of bone mineral areal density. Further, screw and plate removal could contribute to the recovery of bone mineral areal density.

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“…Outro fator importante, é que os implantes podem causar o comprometimento vascular do cortex ósseo e serem responsáveis por essas complicações (Gauthier et al, 2011;Aikawa et al, 2018) Palavras-chave: Fraturas distais, pequeno porte, canino.…”

Section: Methodsunclassified

Desenvolvimento de uma membrana sintética na regeneração óssea

Anjos¹

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Os reparos de perdas ósseas, como no caso de fraturas, representam um desafio na rotina cirúrgica ortopédica, uma vez que exige o desenvolvimento de sistemas que contribuem para promoção da regeneração do tecido perdido, permitindo o completo retorno à função. A utilização de enxertos autógenos e alógenos é uma alternativa de tratamento para essas situações, entretanto existem os riscos de infecções cirúrgicas, dificuldade para reposicionamento do animal no trans-cirúgico, da dor pós-operatória, e a quantidade do material coletado, na maioria das vezes, torna-se insuficiente para realização do procedimento. Por isso, as pesquisas e novos métodos, como a engenharia de tecidos ósseos e medicina regenerativa, visam aumentar sua disponibilidade, reduzir o tempo de recuperação, os custos relacionados e melhorar a regeneração tecidual. Neste contexto, as terapias com biomateriais sintéticos e biodegradáveis como biocerâmicas e polímeros demonstram um grande potencial para a regeneração óssea. Entretanto, existe um grande desafio ao se combinar diferentes materiais a fim de obter a interação desses com o meio biológico e minimizar reações indesejáveis, adequando o tempo de degradação e a taxa de crescimento tecidual no local de implantação. Além da combinação adequada dos materiais, o método de processamento para a obtenção de matrizes porosas é importante. Os materiais de fosfato de cálcio são comumente usados na engenharia de tecidos ósseos, e desses materiais, a hidroxiapatita (HAP) é frequentemente usada, pois é o principal componente dos ossos, com capacidade osseocondutora. Já a policaprolactona (PCL) é um dos polímeros mais atraentes para regeneração óssea, com excelentes propriedades mecânicas, biocompatibilidade e biodegradabilidade. Dessa forma, pretendeu-se com esse trabalho realizar três capítulos: O primeiro que é avaliar a influência dos tipos de tratamentos e fatores predisponentes a complicações na consolidação de fraturas de rádio e ulna em cães por meio de uma revisão sistemática; O segundo, obter o perfil epidemiológico de cães com fraturas de rádio e ulna atendidos no hospital veterinário-ufv; e por último, desenvolver e caracterizar uma membrana de hidroxiapatita e policaprolactona e analisar sua utilização na regeneração óssea em modelo experimental de ostectomia de rádio em coelhos. Palavras-chave: Medicina Regenerativa. Engenharia de Tecidos. Biomateriais.

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In vitro comparison of stiffness of plate fixation of radii from large- and small-breed dogs

Abstract: Plated radii of small-breed dogs had normalized stiffnesses equal to or less than plated radii of large-breed dogs. The complications typically associated with plating of radial fractures in small-breed dogs cannot be ascribed to an overly stiff bone-plate construct.

Cited by 10 publications

References 33 publications

Augmentation of diaphyseal fractures of the radius and ulna in toy breed dogs using a free autogenous omental graft and bone plating

Augmentation of diaphyseal fractures of the radius and ulna in toy breed dogs using a free autogenous omental graft and bone plating

A Retrospective Study of Postoperative Development of Implant-Induced Osteoporosis in Radial–Ulnar Fractures in Toy Breed Dogs Treated with Plate Fixation

Desenvolvimento de uma membrana sintética na regeneração óssea

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