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Original Article
Compatibility of Self-setting DBM-CP Composites in Percutaneous Kyphoplasty
Jung Hee Lee
Journal of the Korean Fracture Society 2007;20(3):266-271.
DOI: https://doi.org/10.12671/jkfs.2007.20.3.266
Published online: June 14, 2016

Department of Orthopedic Surgery, School of Medicine, Kyung Hee University, Seoul, Korea.

Address reprint requests to: Jung Hee Lee, M.D. Department of Orthopedic Surgery, School of Medicine, Kyung Hee University, 1, Hoegi-dong, Dongdaemun-gu, Seoul 130-702, Korea. Tel: 82-2-958-8357. Fax: 82-2-964-3865, ljhos@khmc.or.kr

Copyright © The Korean Fracture Society. All rights reserved

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  • Purpose
    To analyze the physical properties of demineralized bone matrix (DBM) and self-setting calcium phosphate cement (CPC) composite for its compatibility to percutaneous kyphoplasty.
  • Materials and Methods
    According to tap volume method, DBM was mixed with CPC in variable ratio 0%, 20%, 30%, 40% and 50%. Distilled water was used as a hardening fluid. Its properties, including injectability, mold applicability, setting time and its behavior, maximum temperature, and mechanical strength, were analyzed.
  • Results
    The DBM-CP composites has a good injectability and mold applicability, a maximum temperature of less than 5oC, a initial setting time of 3 to 10 minutes. The outer surface of DBM-CP composites showed their even distribution in optical microscopy. Injectability, mold applicability and compressive strength were in inverse proportion to the amounts of DBM.
  • Conclusion
    This study suggests that the DBM-CP composites has a good injectability and mold applicability with a low setting temperature and even distribution of compound. Therefore this composite might be used as a substitute of PMMA in kyphoplasty.
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Fig. 1

Schematic diagram of the injectability test (A) and acryl mold for the rheological test (B).

jkfs-20-266-g001.jpg
Fig. 2

Injectability (I) of the DBM-CP composites.

jkfs-20-266-g002.jpg
Fig. 3

Rheological behavior of the DBM-CP composites injected into acryl mold.

(A) Plain CPC.
(B) 20 volume % of DBM.
(C) 30 volume % of DBM.
(D) 40 volume % of DBM.
(E) 50 volume % of DBM.
jkfs-20-266-g003.jpg
Fig. 4

Setting time of the DBM-CP composites.

jkfs-20-266-g004.jpg
Fig. 5

Tmperature rise of the DBM-CP composites.

jkfs-20-266-g005.jpg
Fig. 6

Optical microscopic findings of DBM (A) and DBMCP composites (B). After selfsetting procedure of 50 volume percent DBM-CP composites, the mixture showed even distribution of DBM.

jkfs-20-266-g006.jpg
Table 1

Ohura's recipe of self-setting CPC and the amount of aqueous media

jkfs-20-266-i001.jpg

Figure & Data

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        Compatibility of Self-setting DBM-CP Composites in Percutaneous Kyphoplasty
        J Korean Fract Soc. 2007;20(3):266-271.   Published online July 31, 2007
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      Compatibility of Self-setting DBM-CP Composites in Percutaneous Kyphoplasty
      Image Image Image Image Image Image
      Fig. 1 Schematic diagram of the injectability test (A) and acryl mold for the rheological test (B).
      Fig. 2 Injectability (I) of the DBM-CP composites.
      Fig. 3 Rheological behavior of the DBM-CP composites injected into acryl mold. (A) Plain CPC. (B) 20 volume % of DBM. (C) 30 volume % of DBM. (D) 40 volume % of DBM. (E) 50 volume % of DBM.
      Fig. 4 Setting time of the DBM-CP composites.
      Fig. 5 Tmperature rise of the DBM-CP composites.
      Fig. 6 Optical microscopic findings of DBM (A) and DBMCP composites (B). After selfsetting procedure of 50 volume percent DBM-CP composites, the mixture showed even distribution of DBM.
      Compatibility of Self-setting DBM-CP Composites in Percutaneous Kyphoplasty

      Ohura's recipe of self-setting CPC and the amount of aqueous media

      Table 1 Ohura's recipe of self-setting CPC and the amount of aqueous media


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