Osteochondroma

Osteochondroma is occurring in the drop come to the fore, the surface covered with warty bone up gristle pate uplift. Osteochondroma is the approximately earthy bone tumors, clement bone tumor accounts for round 1 / 3. The tumor some(prenominal) common in 11 to 20 years old, about 40%. With solitary and multiple ii faces, which is far much common solitary, multiple by an autosomal dominant genetical disease, multiple bone involvement of the Commissioner, accompanied by plication or bone dysplasia and shortening deformity. simply whether single or multiple, their sympathetic morphology. This tumor occurs in the metaphysis of foresightful bone, especially in distal femur, proximal tibia is most prevalent, followed by the proximal humerus, and foot bones were very few at. Tumor size of it ranging in diameter is generally 3 ~ 4cm, large by up to 10cm or to a greater extent(prenominal). Tumor type and can be divided into broad-based pedicle two kinds, lead off o utward from the bone surface, the surface was hemispherical, cauliflower-like or polypoid. Osteochondroma of the structure is more special, and can be divided into three layers.

surface as a make out layer of tough tissue, that is to say cartilage, and connected to the adjacent periosteum; the ticker is a cartilage cap slightly by the sick of(p) blue hyaline cartilage, whose burdensomeness varies with the patients age, the younger, cartilage cap thicker; in adults, very thin cartilage cap, or almost disappeared in the 1 ~ 5mm thickness and more between the microscope and the normal well-situated growth plate is similar to t he cartilage surface than immature cells and matrix orga nization, the more near the bottom The more ! mature, at the union of mature cartilage cells were arranged in columnar, and calcification and ossification of the phenomenon. the principal(prenominal) body of the tumor at the base, ofttimes accounting for much of the tumor, the composition of sponge-like cancellous bone, trabecular bone and more fibrous tissue between, there are generative capillary network. downstairs the base connected with the normal bone. Osteochondroma...If you indispensability to get a full essay, order it on our website: OrderEssay.net

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