Abstract
We describe the unusual occurrence of giant-cell reparative granulomas in the rat. Cutting the ligamentum teres and incising the periosteum around the base of the femoral neck induced femoral capital necrosis. Giant-cell reparative granuloma-like lesions developed in ~0.8% of 366 rats during the early reparative stages of osteonecrosis. Resorption of the necrotic bone, hematopoietic tissue, and adipocytes was exceptionally widespread in these three rats. Overexpression of macrophage-fusing cytokines may account for the increased number of multinucleated giant cells, which on a plump stromal cell background imitate a giant-cell reparative granuloma of the bone.
Résumé
Description d’un développement inhabituel de granulome de réparation à cellules géantes chez le rat. La section du ligament rond et l’incision du périoste à la base du col fémoral induit le développement d’une nécrose de la tête fémorale. Un granulome de réparation à cellules géantes se développe chez 0,8% de 366 rats durant la phase précoce de réparation de l’ostéonécrose. Une résorption de l’os nécrosé, du tissu hématopoéïtique et des adipocytes étaient largement présent et à titre exceptionnel chez ces 3 rats. Une sur-expression de cytokines créatrices de macrophages doit compter pour expliquer le grand nombre de cellules géantes, qui dans un environnement de stroma graisseux imitent un granulome à cellules géantes de réparation osseuse.
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Boss, J.H., Misselevich, I., Norman, D. et al. Giant-cell reparative granuloma-like lesion in the femoral heads of rats during the early repair phase of osteonecrosis. Eur J Orthop Surg Traumatol 14, 7–9 (2004). https://doi.org/10.1007/s00590-003-0119-9
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DOI: https://doi.org/10.1007/s00590-003-0119-9
Keywords
- Experimental osteonecrosis of the femoral head
- Rat
- Giant-cell reparative granuloma
- Animal model of human disease
- Disfigurement of the femoral head after vessels-deprived osteonecrosis