1994
DOI: 10.1620/tjem.173.337
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Histological Verification of Bone Bonding and Ingrowth into Porous Hydroxyapatite Spinous Process Spacer for Cervical Laminoplasty.

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Cited by 27 publications
(15 citation statements)
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“…Although HAs have been shown to be biocompatible and to fuse with lamina2-4,6,10), no previous study had analyzed the relationship between HA shape and outcomes. We therefore assessed the effects of HA shape (winged versus wingless) on clinical and radiological outcomes.…”
Section: Discussionmentioning
confidence: 99%
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“…Although HAs have been shown to be biocompatible and to fuse with lamina2-4,6,10), no previous study had analyzed the relationship between HA shape and outcomes. We therefore assessed the effects of HA shape (winged versus wingless) on clinical and radiological outcomes.…”
Section: Discussionmentioning
confidence: 99%
“…Since the development of an artificial hydroxyapatite (HA) spacer for laminoplasty, several studies have described its biocompatibility, post-operative contact status with lamina, and fusion rate, as well as post-operative canal narrowing and displacement of HA after laminoplasty2,3,6,10,12,15). To our knowledge, however, factors associated with fusion between lamina and HA and the effects of HA shapes on outcomes have not yet been assessed.…”
Section: Introductionmentioning
confidence: 99%
“…Studies on the porosity of hydroxyapatite implants have revealed that dense implants can impair the ingrowth of bone tissue because of the physical barrier, which limits the proliferation of blood vessels essential for bone repair. Pores smaller than 50 mm are too small to allow the growth of calcified tissue, whereas implants with pores 50-300 mm in diameter show bone ingrowth 11,18,19 . Although the latter pores can increase the osteoconduction capacity of the implant, they also make the implant fragile by reducing its mechanical resistance 4,19 .…”
Section: Discussionmentioning
confidence: 99%
“…Resultados semelhantes no estudo de cerâmicas densas foram obtidos por Takeshita e colaboradores 42 , os quais implantaram hidroxiapatita densa na tíbia de ratos, observando também a presença de tecido fibroso envolvendo a cerâmica e que, 24 semanas após o implante regrediu totalmente, verificando-se o contato direto entre a cerâmica e o osso formado ao seu redor. Cerâmicas porosas foram utilizadas por vários autores 43,44 , apresentando poros variando entre 100 e 500 µm, apresentando um aumento contínuo da quantidade de osso formado no interior dos poros, sem no entanto ser observada a fragmentação das partículas da cerâmica, como observado por Kawachi e Andrade e que resultou na grande invasão de tecido ósseo através do material.…”
Section: Biocerâmicas De Fosfato De Cálciounclassified