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Characterization of hydroxyapatite and carbonated apatite by photo acoustic FTIR spectroscopy
An understanding of the interfacial relationship between a bioceramic implant and the adjacent bonet issue is facilitated by precise characterization of the associated structures. The structure ofExpand
Chemical characterization of silicon-substituted hydroxyapatite.
Bioceramic specimens have been prepared by incorporating a small amount of silicon (0.4 wt %) into the structure of hydroxyapatite [Ca10(PO4)6(OH)2, HA] via an aqueous precipitation reaction toExpand
Relation between age, femoral neck cortical stability, and hip fracture risk
BACKGROUND Hip fracture risk rises 100 to 1000-fold over 60 years of ageing. Loss of resistance to bending is not a major feature of normal ageing of the femoral neck. Another cause of fragility isExpand
Novel synthesis and characterization of an AB-type carbonate-substituted hydroxyapatite.
  • I. Gibson, W. Bonfield
  • Materials Science, Medicine
  • Journal of biomedical materials research
  • 15 March 2002
A novel synthesis route has been developed to produce a high-purity mixed AB-type carbonate-substituted hydroxyapatite (CHA) with a carbonate content that is comparable to the type and level observedExpand
Crack growth resistance in cortical bone: concept of microcrack toughening.
The role of microcracking in cortical bone as a toughening mechanism has been investigated in conjunction with the variation in fracture toughness with crack length. Fracture toughness tests wereExpand
Carbonate substitution in precipitated hydroxyapatite: an investigation into the effects of reaction temperature and bicarbonate ion concentration.
Carbonate substitution in the apatite crystal lattice can occur in either the hydroxyl or the phosphate sites, designated as A or B type, respectively, and previous investigations generally haveExpand
Tensile characteristics of ten commercial acrylic bone cements.
  • E. Harper, W. Bonfield
  • Materials Science, Medicine
  • Journal of biomedical materials research
  • 1 September 2000
The mechanical properties of acrylic bone cement, used in orthopedic surgery, are very influential in determining successful long-term stability of a prosthesis. A large number of commercialExpand
Antigenicity and immunogenicity of collagen.
Pertinent issues of collagen antigenicity and immunogenicity are concisely reviewed as they relate to the design and application of biomedical devices. A brief discussion of the fundamental conceptsExpand
Comparison of in vivo dissolution processes in hydroxyapatite and silicon-substituted hydroxyapatite bioceramics.
The incorporation of silicate into hydroxyapatite (HA) has been shown to significantly increase the rate of bone apposition to HA bioceramic implants. However, uncertainty remains about the mechanismExpand
A comparative study on the in vivo behavior of hydroxyapatite and silicon substituted hydroxyapatite granules
  • N. Patel, S. Best, +4 authors P. Revell
  • Materials Science, Medicine
  • Journal of materials science. Materials in…
  • 1 December 2002
Phase pure hydroxyapatite (HA) and a 0.8 wt % silicon substituted hydroxyapatite (SiHA) were prepared by aqueous precipitation methods. Both HA and SiHA were processed into granules 0.5–1.0 mm inExpand