Osteosynthesis and Trauma Care 2004; 12(1): 20-24
DOI: 10.1055/s-2004-822598
Original Article

© Georg Thieme Verlag Stuttgart · New York

Hydroxyapatite Cement (HAC) to Repair Cortical Defects in Long Bones - An Animal Study

E. Schwendenwein1 , S. Hajdu1 , G. Kaltenecker1 , C. Gäbler1 , I. László2 , S. Lang3 , P. Roschger4 , R. Wintersteiger5 , V. Vécsei1
  • 1Department of Traumatology, University of Vienna Medical School, Vienna, Austria
  • 2Department of Orthopaedics and Traumatology, University of Targu-Mures Medical School, Targu-Mures, Romania
  • 3Clinical Institute of Clinical Pathology, University of Vienna Medical School, Vienna, Austria
  • 4Ludwig Boltzmann-Institute of Osteology in Hanusch Hospital and Trauma Centre Meidling, Vienna, Austria
  • 5Department of Pharmacy, University of Graz, Chemistry, Graz, Austria
Further Information

Publication History

Publication Date:
30 March 2004 (online)

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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.

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