Impact-induced osteochondral fracture in the tibial plateau.
J Biomech
; 41(6): 1236-42, 2008.
Article
en En
| MEDLINE
| ID: mdl-18394630
ABSTRACT
In this study, human tibia plateaus with the meniscus removed were impacted on various regions of the plateau surface via a drop test using a 5mm indenter. Osteochondral blocks containing the failure site were then extracted, chemically fixed, dehydrated, gold-particle coated, and sent for X-ray micro-CT imaging to obtain 3-D image reconstructions of the cartilage and underlying bone. Cartilage failure upon impact appeared to be characteristically brittle in nature. Impacted cartilage from the region not protected by the meniscus showed a relatively large cavernous disruption with microcrack propagation extending radially into the subchondral bone, while impacted cartilage from beneath the meniscus showed less dramatic surface disruption and with no underlying bone failure.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Fracturas de la Tibia
/
Cartílago Articular
Límite:
Aged
/
Humans
/
Male
Idioma:
En
Revista:
J Biomech
Año:
2008
Tipo del documento:
Article
País de afiliación:
Nueva Zelanda