Biomechanical testing of a hybrid locking plate fixation of equine sesamoid osteotomies.
Vet Comp Orthop Traumatol
; 27(2): 107-12, 2014.
Article
em En
| MEDLINE
| ID: mdl-24441589
ABSTRACT
OBJECTIVE:
To compare the biomechanical properties of a hybrid locking compression plate (LCP) construct with the compression screw technique as a treatment for transverse mid-body proximal sesamoid bone fractures.METHODS:
Ten paired forelimbs from abattoir horses were used. The medial proximal sesamoid bone of each limb was osteotomized transversely and randomly assigned, to either repair with a two-hole 3.5 mm LCP or a 4.5 mm cortical screw placed in lag fashion. Each limb was tested biomechanically by axial loading in single cycle until failure. The point of failure was evaluated from the load-displacement curves. Then a gross evaluation and radiographs were performed to identify the mode of failure.RESULTS:
The loads to failure of limbs repaired with the hybrid LCP construct (4968 N ± 2167) and the limbs repaired with the screw technique (3009 N ± 1091) were significantly different (p <0.01). The most common mode of failure was through a comminuted fracture of the apical fragment of the proximal sesamoid bone. CLINICALSIGNIFICANCE:
The LCP technique has potential to achieve a better fracture stability and healing when applied to mid-body fractures of the proximal sesamoid bone. Further testing, particularly fatigue resistance is required to corroborate its potential as a treatment option for mid-body fractures of the proximal sesamoid bone.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Osteotomia
/
Ossos Sesamoides
/
Placas Ósseas
/
Fraturas Ósseas
/
Fixação Interna de Fraturas
/
Cavalos
Limite:
Animals
Idioma:
En
Revista:
Vet Comp Orthop Traumatol
Ano de publicação:
2014
Tipo de documento:
Article