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Osteoporosis International

, Volume 23, Issue 10, pp 2559–2565 | Cite as

What is the importance of “halo” phenomenon around bone cement following vertebral augmentation for osteoporotic compression fracture?

  • K. H. Kim
  • S. U. Kuh
  • J. Y. Park
  • K. S. Kim
  • D. K. ChinEmail author
  • Y. E. Cho
Original Article

Abstract

Summary

We investigated the importance, risk factors, and clinical course of the radiolucent “halo” phenomenon around bone cement following vertebral augmentation for osteoporotic compression fracture. Preoperative osteonecrosis and a lump cement pattern were the most important risk factors for the peri-cement halo phenomenon, and it was associated with vertebral recollapse.

Introduction

We observed a newly developed radiolucent area around the bone cement following vertebral augmentation for osteoporotic compression fractures. Here, we describe the importance of the peri-cement halo phenomenon, as well as any associated risk factors and long-term sequelae.

Methods

In total, 175 patients (202 treated vertebrae) were enrolled in this study. The treated vertebrae were subdivided into two groups: Group A (with halo, n = 32) and Group B (without halo, n = 170), and the groups were compared with respect to multiple preoperative (age, sex, BMD, preoperative osteonecrosis) and perioperative factors (operative approach: vertebroplasty or kyphoplasty; cement distribution pattern; cement leakage; cement volume), and postoperative results (VAS score, recollapse). Logistic regression analysis was used to evaluate the relationship between the incidence of the peri-cement halo and all of the parameters described above.

Results

Rates of osteonecrosis were also significantly higher in Group A than in Group B (62.5% vs. 31.2%, p < 0.05), and kyphoplasty (KP) was performed more frequently in Group A (43.8% vs. 17.6%, p < 0.05). Lump cement (93.8% vs. 30.6%, p < 0.05) and recollapse (78.1% vs. 24.7%, p < 0.05) were also more common among individuals in Group A. Logistic regression analysis also showed that preoperative osteonecrosis (OR = 3.679; 95% CI = 1.677–8.073; p = 0.001), KP (OR = 3.630; 95% CI = 1.628–8.095; p = 0.002), lump pattern (OR = 13.870; 95% CI = 2.907–66.188; p = 0.001), and vertebral recollapse (OR = 5.356; 95% CI = 1.897–15.122; p = 0.002) were significantly associated with peri-cement halo.

Conclusions

The peri-cement halo was found to be associated with vertebral recollapse, this sign likely represents a poor prognostic factor after vertebral augmentation for osteoporotic compression fractures.

Keywords

Cement distribution Kyphoplasty Osteonecrosis Osteoporotic vertebral compression fracture Recollapse Vertebroplasty 

Notes

Conflicts of interest

None.

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2012

Authors and Affiliations

  • K. H. Kim
    • 1
  • S. U. Kuh
    • 1
  • J. Y. Park
    • 1
  • K. S. Kim
    • 1
  • D. K. Chin
    • 1
    Email author
  • Y. E. Cho
    • 1
  1. 1.Department of Neurosurgery, Spine and Spinal Cord Institute, Gangnam Severance HospitalYonsei University College of MedicineSeoulKorea

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