Impaction bone grafting with hydroxyapatite: Increased femoral component stability in experiments using Sawbones

Background Substantial bone loss and bone defects increase the amount of allografting required in hip revision surgery. Thus, the use of a synthetic material to limit the amount of allograft tissue required for impaction grafting is desirable. We evaluated the potential of hydroxyapatite (HA) mixtur...

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Bibliographic Details
Published in:Acta orthopaedica 2005-08, Vol.76 (4), p.550-554
Main Authors: Fujishiro, Takaaki, Nishikawa, Tetsuo, Niikura, Takahiro, Takikawa, Satoshi, Nishiyama, Takayuki, Mizuno, Kiyonori, Yoshiya, Shinichi, Kurosaka, Masahiro
Format: Article
Language:English
Subjects:
Arthroplasty, Replacement, Hip - adverse effects
Biological and medical sciences
Biomechanical Phenomena
Bone Substitutes
Bone Transplantation - methods
Femur - surgery
Humans
Hydroxyapatites
Medical sciences
Orthopedic surgery
Prosthesis Failure
Reoperation
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Transplantation, Autologous
Transplantation, Heterologous
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Summary:Background Substantial bone loss and bone defects increase the amount of allografting required in hip revision surgery. Thus, the use of a synthetic material to limit the amount of allograft tissue required for impaction grafting is desirable. We evaluated the potential of hydroxyapatite (HA) mixtures to provide initial mechanical stability to a polished tapered femoral stem. Material and methods We determined the initial stability of a polished tapered femoral stem after reconstructing a cavitary femoral bone defect by impaction bone grafting with cement in Sawbones composite femurs. Three types of graft material were tested for their ability to improve initial rotational stability. The graft materials investigated were pure allograft, a mixture of 50% allograft and 50% hydroxyapatite (HA), and pure HA. Results We found a statistically significant difference between the three groups as regards torsional micromotion and failure load. Interpretation Our findings suggest that reconstruction of femoral bone defects with pure HA or a mixture of allograft and HA provides adequate initial stability for femoral revision arthroplasty using impaction grafting.
ISSN:1745-3674
1745-3682
DOI:10.1080/17453670510041556