American Journal of Neuroradiology 22:1212-1216 (6 2001)
© 2001 American Society of Neuroradiology
ARTICLE
An Ex Vivo Biomechanical Evaluation of a Hydroxyapatite Cement for Use with Kyphoplasty
a From the Orthopaedic Biomechanics Laboratory (S.M.B., L.E.J.), Department of Orthopaedic Surgery, The University of Maryland at Baltimore, Baltimore, Maryland, Department of Radiology, Lewis-Gale Hospital, Salem, Virginia (J.M.M.), and the Division of Neuroradiology, University Hospital, Amiens, France (H.D.).
BACKGROUND AND PURPOSE: Previous ex vivo biomechanical studies have shown that kyphoplasty with polymethylmethacrylate cement increases vertebral body (VB) strength and restores VB stiffness and height after compression fracture. The purpose of the current study was to determine if a hydroxyapatite cement used as a void filler during kyphoplasty provides mechanical stabilization similar to that of a polymethylmethacrylate cement.
METHODS: Simulated compression fractures were experimentally created in 33 osteoporotic VBs harvested from female cadaver spines. VBs were assigned to one of three groups: 1) kyphoplasty with a custom mixture of Simplex P; 2) kyphoplasty with BoneSource; and 3) no treatment. The kyphoplasty treatment consisted of inserting a balloon-like device into the VB via both pedicles, inflating the tamp, and filling the created void with Simplex P bone cement or BoneSource. VBs in the no-treatment group received no interventions. Pre- and posttreatment heights were measured, and the repaired VBs were recompressed to determine posttreatment strength and stiffness values.
RESULTS: Kyphoplasty with altered Simplex P restored strength, whereas kyphoplasty with BoneSource and the no-treatment protocol both resulted in significantly weaker VBs relative to initial strength. All treatments resulted in significantly less stiff VBs relative to their initial condition. All VBs lost significant height after initial compression, but a significant amount of lost height was restored by kyphoplasty with either cement.
CONCLUSION: Kyphoplasty with either cement significantly restored VB height. Kyphoplasty with altered Simplex P resulted in stronger repairs than did no treatment or kyphoplasty with BoneSource.
This article has been cited by other articles:
 |
|
 |
|
  A. G. Hadjipavlou, M. N. Tzermiadianos, P. G. Katonis, and M. Szpalski Percutaneous vertebroplasty and balloon kyphoplasty for the treatment of osteoporotic vertebral compression fractures and osteolytic tumours J Bone Joint Surg Br, December 1, 2005; 87-B(12): 1595 - 1604. [Full Text] [PDF]
|
|
|
|
 |
|
 A. Hiwatashi, R. Sidhu, R. K. Lee, R. R. deGuzman, D. T. Piekut, and P.-L. A. Westesson Kyphoplasty versus Vertebroplasty to Increase Vertebral Body Height: A Cadaveric Study Radiology, December 1, 2005; 237(3): 1115 - 1119. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J.J. Verlaan, F.C. Oner, P.J. Slootweg, A.J. Verbout, and W.J.A. Dhert Histologic Changes After Vertebroplasty J. Bone Joint Surg. Am., June 1, 2004; 86(6): 1230 - 1238. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. M. Mathis, A. O. Ortiz, and G. H. Zoarski Vertebroplasty versus Kyphoplasty: A Comparison and Contrast AJNR Am. J. Neuroradiol., May 1, 2004; 25(5): 840 - 845. [Full Text] [PDF]
|
|
|
|
|
|
A. Hiwatashi, T. Moritani, Y. Numaguchi, and P.-L. Westesson Increase in Vertebral Body Height after Vertebroplasty AJNR Am. J. Neuroradiol., February 1, 2003; 24(2): 185 - 189. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. Dudeney, I.H. Lieberman, M-K. Reinhardt, and M. Hussein Kyphoplasty in the Treatment of Osteolytic Vertebral Compression Fractures as a Result of Multiple Myeloma J. Clin. Oncol., May 1, 2002; 20(9): 2382 - 2387. [Abstract] [Full Text] [PDF]
|
|