Kyphoplasty increases Vertebral Body Height more than ... · Materials & Methods •!Cadavers...

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

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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

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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

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Materials & Methods

•! Vertebral bodies were dissected and separated

•! Compression fractures were created

Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology

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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

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Materials & Methods

Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology

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Kyphoplasty Vertebroplasty

Pre tx

Post tx

Presentation material for educational purposes only. All rights reserved. ©2003 URMC Radiology

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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

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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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