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KMID : 0922220100100010043
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Journal of the Korean Musculoskeletal Transplantation Society
2010 Volume.10 No. 1 p.43 ~ p.49
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Comparative Analysis of Graft Extender in Lumbar Spinal Fusion
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Park Ki-Chul
Lee Rae-Hyung
Kim Jae-Hoon
Park Ye-Soo
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Abstract
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Purpose: To compare the bone fusion rate between hydroxyapatite and tricalcium
phosphate/hydroxyapatite mixture as an adjunct to autogenous iliac bone graft in lumbar spinal fusion and analyze the efficacy as a bone graft extender.
Materials and Methods: A retrospective review was carried out on 33 patients who were treated with decompression and posterolateral fusion using hydroxyapatite on 16 patients and tricalcium phosphate/hydroxyapatite mixture on 17 patients as an adjunct to autogenous iliac bone graft. All procedures were performed between May 2003 and December 2008. Fusion was determined by the final radiographic findings with using Christensen’s classification.
Results: Of all the 48 segments that underwent fusion, 46 segments (95.8%) in group using hydroxyapatite and 40 segments (88.9%) of all the 45 segments in group using tricalcium phosphate/hydroxyapatite mixture were determined to be fused, and the difference was not statistically significant (p=0.192).
Conclusion: Hydroxyapatite and tricalcium phosphate/hydroxyapatite mixture as a adjunct to autogenous iliac bone for use in posterolateral fusion showed a high fusion rates and it seemed to be useful as a bone graft extender.
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KEYWORD
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Posterolateral spinal fusion, Hydroxyapatite, Tricalcium phosphate/hydroxyapatite mixture, Bone graft extender
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