[Bone biomaterial].
The use of deep frozen allografts is not a recent technic. The evolution of the conservative technics authorize a sufficient preservation of osseous and cartilaginous structure. The clinical results are considered as good in most of the cases. The intra medullary cells are most involved in immunological responses but clinically speaking only 10% to 20% of the case treated has a reject. The becoming of the grafted tissue is best if the recipient is young, the graft well fixed and the muscular surrounding well vascularized. 454 grafts and 64 massive osteochondral allografts have been archived between 1979 and 1993 for traumatic, tumoral, and surgical diseases. The results have been considered as good or excellent in 85% of the cases. The actual problems are the biomechanical behaviour of the ligamentary revascularization and fixation which gives in numerous cases a high percentage of loosening.
Poitout
D G
DG
C.H.U. NORD, Chemin des Bourrely, Marseille.
D001672:Biocompatible Materials; D016025:Bone Transplantation; D002358:Cartilage, Articular / Q000637:transplantation; D006801:Humans
D001672:Biocompatible Materials
L'os biomatériau.