[Experimental research on absorption after ilium autografting].
Even though efforts were made by closely adhering to the established rules of bone grafting, late absorption of bone grafts occurs frequently. Sometime the effect of operation is jeopardized. The cause of bone absorption is complicated, it is necessary to carry out further research. In this study 80 autogenous grafts were taken from ilium of 40 rabbits. A half of the grafts were transplanted on to cranium, the rests were implanted into subcutaneous tissue. One month later, bone grafts were absorbed 20.0% (on surface of cranium bone) and 21.0% (in subcutaneous sites). Three months after operation absorptions increased to 67.6% and 69.1% respectively. Six months later, absorption reached to 76.0% and 73.6%. There is no statistical difference between two sites where the grafts are transplanted (P greater than 0.05). Absorption of bone grafts was also found in 3 dogs. Its ilium autografts were absorbed 52.8% (over cranium) and 45.2% (in subcutaneous tissue) 3 months after operation, the former increased to 55.3% and the latter 50.1% 6 months later. Microscopic examination revealed absorption and melting of bone grafts, necrosis and cysts formation were also found in some grafts. We believe that these data may help us to recognize the absorption further after free bone autografting.
Research Center of Plastic Surgery, 3rd Hospital, Beijing Medical University.
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Bao
D000042:Absorption; D000818:Animals; D005260:Female; D007085:Ilium / Q000378:metabolism / Q000637:transplantation*; D008297:Male; D011817:Rabbits; D012886:Skull / Q000601:surgery; D016042:Transplantation, Heterotopic