Evaluation of a Novel Screw Position in a Type III Distal Phalanx Fracture Model: An Ex Vivo Study
Data(s) |
2015
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Resumo |
OBJECTIVE: Mechanical evaluation of a novel screw position used for repair in a type III distal phalanx fracture model and assessment of solar canal penetration (SCP). STUDY DESIGN: Experimental study. SAMPLE POPULATION: Disarticulated equine hooves (n = 24) and 24 isolated distal phalanges. METHODS: Hooves/distal phalanges cut in a sagittal plane were repaired with 1 of 2 different cortical screw placements in lag fashion. In group 1 (conventional screw placement), the screw was inserted halfway between the proximal border of the solar canal (SC) and the subchondral bone surface on a line parallel to the dorsal cortex, whereas in group 2, the screw was inserted more palmar/plantar, where a perpendicular line drawn from the group 1 position reached the palmar/plantar cortex. Construct strength was evaluated by 3-point bending to failure. SCP was assessed by CT imaging and macroscopically. RESULTS: Screws were significantly longer in group 2 and in forelimbs. Group 2 isolated distal phalanges had a significantly more rigid fixation compared with the conventional screw position (maximum point at failure 31%, bending stiffness 41% higher). Lumen reduction of the SC was observed in 13/52 specimens (all from group 2), of which 9 were forelimbs. CONCLUSIONS: More distal screw positioning compared with the conventionally recommended screw position for internal fixation of type III distal phalangeal fractures allows placement of a longer screw and renders a more rigid fracture fixation. The novel screw position, however, carries a higher risk of SCP |
Formato |
application/pdf |
Identificador |
http://boris.unibe.ch/75827/1/Bindler_et_al-2015-Veterinary_Surgery.pdf Bindler, Dorian; Koch, Christoph; Gendron, Karine; Ferguson, Stephen John; Kaposi, Andras D.; Papp, Miklos; Bodó, Gabor (2015). Evaluation of a Novel Screw Position in a Type III Distal Phalanx Fracture Model: An Ex Vivo Study. Veterinary surgery, 44(7), pp. 829-837. Wiley-Blackwell 10.1111/vsu.12354 <http://dx.doi.org/10.1111/vsu.12354> doi:10.7892/boris.75827 info:doi:10.1111/vsu.12354 info:pmid:26147008 urn:issn:0161-3499 |
Idioma(s) |
eng |
Publicador |
Wiley-Blackwell |
Relação |
http://boris.unibe.ch/75827/ |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Bindler, Dorian; Koch, Christoph; Gendron, Karine; Ferguson, Stephen John; Kaposi, Andras D.; Papp, Miklos; Bodó, Gabor (2015). Evaluation of a Novel Screw Position in a Type III Distal Phalanx Fracture Model: An Ex Vivo Study. Veterinary surgery, 44(7), pp. 829-837. Wiley-Blackwell 10.1111/vsu.12354 <http://dx.doi.org/10.1111/vsu.12354> |
Palavras-Chave | #630 Agriculture #570 Life sciences; biology #610 Medicine & health |
Tipo |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed |