Patients undergoing vertebroplasty at thoracolumbar junction with and without vacuum clefts
| Group | No of Patients | Age (yrs) | Sex (F/M, no.) | Cement (mL) | Intradiskal Leak(u disk*:l disk†) | Initial Wedge Angle (°)‡ | Wedge Angle Change§ | Improved Percentage of Height¶ |
|---|---|---|---|---|---|---|---|---|
| I | 14 | 71.6 | 11/3 | 3.8 | 3:1 | 15.3 | 1.2 | 9.0 |
| II | 39 | 77.7 | 31/8 | 5.3 | 6:2 | 14.5 | 6.3 | 48.3 |
| P value | .01 | .006 | .42 | <.001 | .001 |
Note:—F indicates female; M, male; u, upper; l, lower.
* Cement leakage into the upper disk.
† Cement leakage into the lower disk.
‡ Wedge angle of the collapsed body before vertebroplasty.
§ (Wedge angle change) before − (wedge angle) after vertebroplasty.
¶ [(H/HN) post − (H/HN)pre]/(H/HN) pre.