Header

UZH-Logo

Maintenance Infos

Biomechanical properties of plate constructs for feline ilial fracture gap stabilization


Schmierer, Philipp A; Smolders, Lucas A; Zderic, Ivan; Gueorguiev, Boyko; Pozzi, Antonio; Knell, Sebastian Christoph (2019). Biomechanical properties of plate constructs for feline ilial fracture gap stabilization. Veterinary Surgery, 48(1):88-95.

Abstract

OBJECTIVE: To determine the biomechanical properties of plating techniques for comminuted feline ilial fractures.
STUDY DESIGN: Ex vivo study on 40 paired feline hemipelves.
SAMPLE POPULATION: Forty paired fresh-frozen hemipelves that had been collected from 20 cats aged 2-6 years and weighing 4.0-5.5 kg.
METHODS: A transverse 3-mm gap was created in each ilium. Hemipelves were fixed with one of the following methods (n = 10 per group): (1) a dorsal plate and nonlocking screws, (2) a lateral plate and nonlocking screws, (3) a lateral plate and locking screws, or (4) a lateral and dorsal locking compression plate using nonlocking screws. Each specimen was subjected to incremental, sinusoidal cyclic loading until failure, defined as 10-mm displacement. The initial stiffness and number of cycles required to reach 1-, 2-, 5-, and 10-mm axial displacement were statistically analyzed.
RESULTS: The initial stiffness and number of cycles to failure were higher in specimens fixed with double nonlocking plates than in all other fixations (P < .05) except specimens fixed with lateral locking plate at 10-mm displacement (P = .44). Locking implants withstood more cycles to 5- (P < .05) and 10-mm (P < .05) displacement compared with other single-plate nonlocking groups. Screw loosening occurred only in the 3 nonlocking fixations.
CONCLUSION: Double plating improved stiffness and resistance to failure of comminuted feline ilial fracture constructs compared with all other fixations. Single locking plates produced superior constructs compared with single nonlocking constructs.
CLINICAL SIGNIFICANCE: Locking implants are recommended to repair comminuted feline ilial fractures for their extended fatigue life and resistance to screw loosening. Orthogonal plating offers a strong nonlocking alternative.

Abstract

OBJECTIVE: To determine the biomechanical properties of plating techniques for comminuted feline ilial fractures.
STUDY DESIGN: Ex vivo study on 40 paired feline hemipelves.
SAMPLE POPULATION: Forty paired fresh-frozen hemipelves that had been collected from 20 cats aged 2-6 years and weighing 4.0-5.5 kg.
METHODS: A transverse 3-mm gap was created in each ilium. Hemipelves were fixed with one of the following methods (n = 10 per group): (1) a dorsal plate and nonlocking screws, (2) a lateral plate and nonlocking screws, (3) a lateral plate and locking screws, or (4) a lateral and dorsal locking compression plate using nonlocking screws. Each specimen was subjected to incremental, sinusoidal cyclic loading until failure, defined as 10-mm displacement. The initial stiffness and number of cycles required to reach 1-, 2-, 5-, and 10-mm axial displacement were statistically analyzed.
RESULTS: The initial stiffness and number of cycles to failure were higher in specimens fixed with double nonlocking plates than in all other fixations (P < .05) except specimens fixed with lateral locking plate at 10-mm displacement (P = .44). Locking implants withstood more cycles to 5- (P < .05) and 10-mm (P < .05) displacement compared with other single-plate nonlocking groups. Screw loosening occurred only in the 3 nonlocking fixations.
CONCLUSION: Double plating improved stiffness and resistance to failure of comminuted feline ilial fracture constructs compared with all other fixations. Single locking plates produced superior constructs compared with single nonlocking constructs.
CLINICAL SIGNIFICANCE: Locking implants are recommended to repair comminuted feline ilial fractures for their extended fatigue life and resistance to screw loosening. Orthogonal plating offers a strong nonlocking alternative.

Statistics

Citations

Altmetrics

Downloads

2 downloads since deposited on 20 Dec 2018
2 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Veterinary Clinic > Department of Small Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Uncontrolled Keywords:General Veterinary
Language:English
Date:1 January 2019
Deposited On:20 Dec 2018 15:59
Last Modified:28 Apr 2019 07:29
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0161-3499
Additional Information:This is the peer reviewed version of the following article: chmierer PA, Smolders LA, Zderic I, Gueorguiev B, Pozzi A, Knell SC. Biomechanical properties of plate constructs for feline ilial fracture gap stabilization. Veterinary Surgery. 2018;1–8. which has been published in final form at https://doi.org/10.1111/vsu.13124. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. (http://www.wileyauthors.com/self-archiving)
OA Status:Closed
Publisher DOI:https://doi.org/10.1111/vsu.13124
PubMed ID:30422336

Download

Content: Accepted Version
Language: English
Filetype: PDF - Registered users only until 13 November 2019
Size: 210kB
Embargo till: 2019-11-13