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Analysis of Treatment Methods for Subsequent Vertebral Fractures Following Osteoporotic Compression Fractures

  • Journal of Korean Society of Spine Surgery
  • Abbr : J Kor Spine Sur
  • 2015, 22(3), pp.75-81
  • Publisher : Korean Society Of Spine Surgery
  • Research Area : Medicine and Pharmacy > Orthopedic Surgery

김정훈 1,  김성수 1,  이동현 1,  임동주 1,  최병완 1,  Jin-Hwan Kim 1,  Jinhyok Kim 1,  정성재 1

1인제대학교

Accredited

ABSTRACT

Study Design: A multicenter retrospective study. Objectives: To compare the incidence and pattern of subsequent vertebral fractures following conservative treatment versus vertebroplasty or kyphoplasty for acute osteoporotic vertebral compression fractures. Summary of Literature Review: Previous studies suggest that new vertebral fractures may increase following vertebroplasty or kyphoplasty because bony cement inserted into the vertebral body of a fractured bone can elevate its strength and stiffness, which in turn, may increase the probability of the compression fractures. Materials and Methods: From three hospitals, we recruited 135 patients who had been treated for acute osteoporotic compression fractures and had available spine images taken at their 1-year follow-up. The patients were divided into two groups according to treatment methods. Group C had been managed conservatively, and Group VK had undergone vertebroplasty or kyphoplasty. The two groups were compared for subsequent vertebral fractures. Results: Group C consisted of 76 patients, and Group VK had 59. There were no significant differences between the two groups in terms of age, sex, medical comorbidity, body mass index (BMI), bone mineral density, presence of prior vertebral fracture or acute fracture level (p>0.05). New vertebral fractures were detected in 25 patients (19% of total subjects): 6 (8%) from Group C, and 19 (32%) from Group VK, demonstrating a significantly higher incidence in the VK group (p=0.0007). In the subgroup analysis, there was no significant difference between vertebroplasty and kyphoplasty (p>0.05). While four of the six patients (67%) in Group C had subsequent fractures in nonadjacent vertebrae, 14 of the 19 patients (74%) in Group VK had subsequent fractures in adjacent vertebrae. Conclusions: Subsequent vertebral fractures were found in 19% of subjects at one year after treatment for acute osteoporotic compression fractures. Compared with conservative treatment, vertbroplasty or kyphoplasty significantly increased the occurrence of subsequent vertebral fractures, which appeared more often in adjacent vertebrae.

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