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DOI: 10.1055/s-2004-822598
© Georg Thieme Verlag Stuttgart · New York
Hydroxyapatite Cement (HAC) to Repair Cortical Defects in Long Bones - An Animal Study
Publication History
Publication Date:
30 March 2004 (online)


Abstract
Hydroxyapatite cement (HAC) paste has already been used in animal experiments as well as in clinical studies on the cranial skeleton, i. e., on non-stressed bone, for the reconstruction of defects. The present experiment intended to provide information if HAC can be applied for treatment of defects in the stressed cortical region of long bones. For this purpose artificial defects were set on the ulnar diaphyses of six New Zealand rabbits and filled with HAC plugs. After set periods of time (postoperative, 8 days, 12 days, 4 weeks, 4 months) the results were clinically, radiologically, histologically and electron microscopically evaluated. No complications occurred in the animal study group. The results showed that HAC can be successfully applied as an excellent bio-compatible material to the stressed cortical region of long bones for the repair of stable bone defects. After four months bone tissue of full value was shown to be present when examined with both light and under electron microscopes. HAC was resorbed completely within this time period.
Key words
Hydroxyapatite cement - defect repair - cortical long bones - rabbit