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Kyphoplasty increases Vertebral Body Height more
than Vertebroplasty in a Cadaver Study
Hiwatashi A, Sidhu R Lee R, deGuzman R
Piekut D, Westesson PL
University of Rochester New York
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 1 of 9
Purpose
To compare height restoration with kyphoplasty and vertebroplasty in cadavers using MDCT
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 2 of 9
Materials & Methods
•! Cadavers –!37 vertebral bodies (21 T, 16 L-spine) –!mean 82 years –!Kyphoplasty (n = 19) –!Vertebroplasty (n = 18)
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 3 of 9
Materials & Methods
•! Vertebral bodies were dissected and separated
•! Compression fractures were created
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 4 of 9
Materials & Methods
•! Four detector-row CT –!Before compression –!After compression fracture –!After treatment
•! Sagittal Reconstructions –!1.25 mm slice thickness
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 5 of 9
Materials & Methods
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 6 of 9
Kyphoplasty Vertebroplasty
Pre tx
Post tx
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 7 of 9
Results
Kyphoplasty Vertebroplasty
Initial
After Fx
After Tx
Height restoration
Angle reduction
22.2mm
15.3
20.5
93%
3.1°
21.8mm
15.4
17.6
82%
1.6°
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
Page 8 of 9
Conclusion
•! Kyphoplasty increased vertebral body height more than vertebroplasty
•! The differences in height restoration between the two techniques were small (3 mm) and the clinical significance remains to be documented
Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology
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