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Vertebroplasty And Kyphoplasty. Comparison Of Height Gains And Cement Leakage In A Cadaver Model 2004

Westesson, Per-Lennart, M.D. Phd, DDS
Sidhu, Ravinder, M.D.
Hiwatashi, Akio, M.D.
Piekut, Diane, PhD.
DeGuzman, Ramon, M.D.
Lee, Ryan, M.D.

Purpose:
To compare height gains and cement leakage in vertebroplasty and kyphoplasty in a cadaver model.

Methods and Materials:
We harvested 80 vertebral bodies from donated cadavers, created compression fractures and treated half of the fractures with vertebroplasty and the other half with kyphoplasty in a random fashion. The results were evaluated by measuring the height of the vertebral bodies on sagittally reformatted CT scans obtained before and after creation of fractures and after treatment. The amount of cement leakage was quantified on axial CT scans.

Results:
At the time of this submission we have treated four treated vertebral bodies; 2 with vertebroplasty and 2 with kyphoplasty. Both methods increased the vertebral body height (vertebroplasty 1.9 mm, kyphoplasty 3.3 mm). There was no significant difference in the amount of cement leakage. At the time of presentation we will have the results of the complete study.

Conclusion:
Both vertebroplasty and kyphoplasty can increase the height of fractured vertebral bodies. At the time of presentation we will have the result of a large series and will have a more definite comparison of the two techniques.