Reparative cartilaginous callus in subarticular osteonecrosis of bone. A histopathological study of the femoral head.
Clin Orthop Relat Res
; (186): 272-83, 1984 Jun.
Article
em En
| MEDLINE
| ID: mdl-6723154
ABSTRACT
A histopathologic study of a series of 346 resected femoral heads with gross osteonecrosis secondary to trauma, steroid therapy, idiopathic or other disease processes demonstrated the production of significant cartilaginous callus tissue at fracture clefts in 19 specimens (5.5%). Although subarticular fracture clefts were commonly present in such specimens, the formation of cartilaginous callus occurred only when one of the two opposing surfaces at the fracture cleft consisted of viable bone. Usually this was osseous tissue that originally had composed a portion of the infarct but had undergone revascularization. In another group of five cases from the same series, fragmentation of all tissue superior to the layer of cartilaginous callus had occurred by the time of surgery. The previously formed cartilaginous callus layer then became the actual weightbearing surface. Pathologically, callus must be differentiated from the cartilaginous tuft phenomenon of exposed intra-articular bone.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Calo Ósseo
/
Cartilagem
/
Necrose da Cabeça do Fêmur
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Clin Orthop Relat Res
Ano de publicação:
1984
Tipo de documento:
Article