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Biomechanical comparison of two implants for the stabilization of incomplete ossification of the humeral condyle lesions in dogs.
- Source :
-
Veterinary surgery : VS [Vet Surg] 2014 Jan; Vol. 43 (1), pp. 58-65. - Publication Year :
- 2014
-
Abstract
- Objective: To compare biomechanical properties of (1) 4.5 mm cortical screws and Fitz Fenestrated Tubular Transcondylar (F2T2) screws; (2) normal humeri and humeri with an intracondylar osteotomy; and (3) humeri with an intracondylar osteotomy stabilized with either a 4.5 mm cortical screw or a F2T2 screw.<br />Study Design: Cadaveric biomechanical assessment.<br />Sample Population: 4.5 mm cortical screws (n = 10), 5.85 mm F2T2 screws (n = 10), and paired dog humeri (n = 40).<br />Methods: Cortical and F2T2 screws were loaded to failure in 3-point bending. Ten pairs of humeri with or without an intracondylar osteotomy were axially loaded to failure. Ten additional pairs of humeri with an intracondylar osteotomy were alternately stabilized with a positional cortical or F2T2 screw and axially loaded to failure.<br />Results: Mean stiffness, yield load, and failure load was significantly greater (P < .001) for the F2T2 screws compared with cortical screws as well as for intact humeri compared with humeri with an intracondylar osteotomy (P < .001). There were no significant differences in mean stiffness (P = .59), yield load (P = .31), or failure load (P = .24) between humeri with stabilized intracondylar osteotomy.<br />Conclusion: Isolated F2T2 screws have superior mechanical properties to 4.5 mm cortical screws when loaded in 3-point bending. Intracondylar osteotomy adversely affected humeral mechanical integrity. Osteotomized humeri stabilized by either screw had comparable mechanical properties.
Details
- Language :
- English
- ISSN :
- 1532-950X
- Volume :
- 43
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Veterinary surgery : VS
- Publication Type :
- Academic Journal
- Accession number :
- 24527494
- Full Text :
- https://doi.org/10.1111/j.1532-950x.2013.12077.x