Childhood periosteal chondroma: femoral neck thickening and remote hyperostosis as clues to plain film diagnosis.
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We present an unusual case of two synchronous chondroid matrix lesions in the proximal femur of a 16-year-old male. They were incidental findings, which subsequently underwent surgical excision and confirmed the imaging findings of a "kissing" osteochondroma and a periosteal/juxtacortical chondroma. We could not find another report of these findings in the English literature.
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A modification of the mucoperiosteal flap planning for anterior maxillary osteotomy operations is suggested. This approach involves a total reflection of the labial mucoperiosteal flap, with the advantages of direct vision of the operative field thus providing easy and precise execution of the operative bony cuts, avoiding damage to the adjacent teeth and reduction of operating time. Sufficient blood supply to the mobilised segment is maintained through the palatal blood vessels. Corrective periodontal surgery may also be carried out at the same time.
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The purpose of this project was to verify the value of perfused periosteum as a possibly ideal bed for autogenous cancellous bone graft. The model consisted of a 7 cm defect in the sheep tibia, stabilized with a locked intramedullary nail. The defect was filled with conventional cortico-cancellous bone graft covered either with a muscle or a perfused osteoperiosteal flap. The incorporation of the graft was analysed by a series of radiological and mechanical examinations. The graft embedded in perfused osteo-periosteum was rapidly remodelled to a strong, circular bone. Mechanical testing revealed even better values than for normal bone. The graft embedded in muscle showed an important resorptive phase before scanty, incomplete, reconstitution of bone appeared. Mechanical properties were poor. The study supports the hypothesis that perfused osteo-periosteum is an ideal bed for cancellous bone graft and that perfused muscle is not the ideal environment for incorporation of the graft.
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