Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Clinical and Radiological Outcomes of Anterior Cervical Interbody Fusion Using Hydroxyapatite Spacer

  • Kim, Sung-Chul (Department of Neurosurgery, Ajou University School of Medicine) ;
  • Kang, Sung-Won (Department of Neurosurgery, Ajou University School of Medicine) ;
  • Kim, Se-Hyuk (Department of Neurosurgery, Ajou University School of Medicine) ;
  • Cho, Ki-Hong (Department of Neurosurgery, Ajou University School of Medicine) ;
  • Kim, Sang-Hyun (Department of Neurosurgery, Ajou University School of Medicine)
  • Published : 2009.10.28
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Abstract

Objective : This is retrospective study of clinical and radiological outcomes of anterior cervical fusion using Bongros-$HA^{TM}$ (BioAlpha, Seongnam, Korea) which is a type of synthetic hydroxyapatite (HA) spacer to evaluate the efficacy in its clinical application and usefulness as a reliable alternative to autograft bone. Methods : Twenty-nine patients were enrolled in this study and 40 segments were involved. All patients were performed anterior cervical interbody fusion using HA spacer and plating system. Indications for surgery were radiculopathy caused by soft-disc herniation or spondylosis in 18 patients, spondylotic myelopathy in 1 patient, and spinal trauma in 10 patients. Cervical spine radiographs were obtained on postoperative 1day, 1week, and then at 1, 2, 6, and 12 months in all patients to evaluate intervertebral disc height, and the degrees of lordosis. Cervical computed tomography was done at postoperative 12 month in all patients to confirm the fusion status. The mean period of clinical follow-up was 17 months. Results : Complete interbody fusion was achieved in 100% of patients. Preoperative kyphotic deformities were corrected in all cases after surgery. Intervertebral disc height was well maintained during follow up period. There were no cases of graft extrusion, graft deterioration and graft fracture. Conclusion : HA spacer is very efficient in achieving cervical fusion, maintaining intervertebral disc height, and restoring lordosis. When combined with the placement of a cervical plate, immediate stability can be achieved and graft related complication can be prevented.

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References

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