Osteoporosis International

, Volume 22, Issue 1, pp 271–279

Early treatment with zoledronic acid prevents bone loss at the hip following acute spinal cord injury

  • J. S. Bubbear
  • A. Gall
  • F. R. I. Middleton
  • M. Ferguson-Pell
  • R. Swaminathan
  • R. W. Keen
Original Article

DOI: 10.1007/s00198-010-1221-6

Cite this article as:
Bubbear, J.S., Gall, A., Middleton, F.R.I. et al. Osteoporos Int (2011) 22: 271. doi:10.1007/s00198-010-1221-6

Abstract

Summary

Osteoporosis after spinal cord injury is common. Reductions in bone density are rapid and fracture rates are higher after injury. Early treatment with 4 mg zoledronic acid significantly reduced bone loss at the hip compared to untreated individuals in the first year. Treatment appeared safe and well tolerated.

Introduction

Bone mineral density (BMD) is lost rapidly following spinal cord injury (SCI), predominantly in the lower limbs. Bone turnover markers suggest an early increase in resorption.

Methods

A randomised, open-label study of 14 patients with acute SCI randomised to receive 4 mg IV zoledronic acid or standard treatment. BMD was measured by dual-X-ray absorptiometry at the lumbar spine and hip (femoral neck, total and trochanter) at baseline, 3, 6 and 12 months. Bone turnover markers (serum C-terminal telopeptide and Procollagen I N-terminal peptide and urinary N-terminal telopeptide/Cr ratio) were also measured.

Results

After 12 months, there was a significant difference in BMD between the groups at the total hip (12.4%, p = 0.005), trochanter (13.4%, p = 0.028) and lumbar spine (2.7%, p = 0.033). However, the difference between groups at the femoral neck was not significant (4.8%, p = 0.741). In the treated group, bone resorption was reduced and remained reduced up to 12 months. Other than flu-like symptoms immediately after the infusion, no adverse events were observed.

Conclusion

IV zoledronic acid is an effective and well-tolerated treatment to prevent bone mineral density loss at the total hip and trochanter for up to 12 months following SCI.

Keywords

BisphosphonateOsteoporosisSpinal cord injuryZoledronic acid

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2010

Authors and Affiliations

  • J. S. Bubbear
    • 1
  • A. Gall
    • 2
  • F. R. I. Middleton
    • 2
  • M. Ferguson-Pell
    • 3
  • R. Swaminathan
    • 4
  • R. W. Keen
    • 1
    • 5
  1. 1.Metabolic UnitRoyal National Orthopaedic HospitalStanmoreUK
  2. 2.Spinal Cord Injuries CentreRoyal National Orthopaedic HospitalStanmore, MiddlesexUK
  3. 3.Faculty of Rehabilitation MedicineUniversity of AlbertaEdmontonCanada
  4. 4.Department of Chemical PathologySt Thomas’s HospitalLondonUK
  5. 5.Institute of Orthopaedic and Musculoskeletal ScienceUniversity College HospitalLondonUK