J Korean Orthop Assoc.  2015 Oct;50(5):401-406. 10.4055/jkoa.2015.50.5.401.

The Radiologic Result of Silicon-Containing Porous Hydroxyapatite Packed within a Cage in Posterior Lumbar Interbody Fusion of Lumbar Spine: Preliminary Study

• Choi SM
• Kim YM
• Lee HJ
• Lee JH

• KMID: 2185103
• DOI: http://doi.org/10.4055/jkoa.2015.50.5.401

Abstract

PURPOSE
The objective of this study is to analyze the radiologic fusion rate in posterior lumbar interbody fusion (PLIF) using silicon-containing porous hydroxyapatite (Si-HA) chips packed within a cage.
MATERIALS AND METHODS
Twelve patients who underwent PLIF using Si-HA (BoneMedik-S(TM); Meta-Biomed, Cheongju, Korea) blocks packed within a cage were enrolled. PLIF was performed in the same manner in all patients. A cage filled with Si-HA was inserted into disc space. Serial X-rays and 3-dimensional computed tomography (3D-CT) were performed for evaluation of the fusion status.
RESULTS
At postoperative 12 months, 11 cases showed grade IV and one case showed grade III on X-rays. At postoperative 24 months, all cases showed grade IV (complete fusion). Assessment of fusion by 3D-CT also showed grade I in all cases at postoperative 12 months.
CONCLUSION
Considering the above results, Si-HA packed in a cage appears to be an effective bone graft material for use in PLIF.

Keyword

lumbar vertebrae; posterior lumbar interbody fusion; silicon-containing porous hydroxyapatite

MeSH Terms

Chungcheongbuk-do
Durapatite*
Humans
Lumbar Vertebrae
Spine*
Transplants
Durapatite

Figure

• 

  Figure 1 Photos of cage and block shaped hydroxyapatite (BoneMedik-S™; Meta-Biomed, Cheongju, Korea).

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  Figure 2 (A, B) Immediate postoperative radiograph shows interbody fusion with cage using a hydroxyapatite graft on the right (white arrows) and a strut autobone graft on the left (black arrow). (C, D) Postoperative radiograph (24 months later) shows complete bony fusion with trabeculation between L4 and L5 body on the right (white arrows) and comparable to autobone graft on the left (black arrow).

• 

  Figure 3 Postoperative 3-dimensional computed tomography image (24 months later) in interbody fusion with a cage using hydroxyapatite graft on the right and strut autobone graft on the left shows complete bony fusion (A) with trabeculation on cage filled with hydroxyapatite only (B) as well as autobone graft side (C).

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