Baseline characteristics and clinical outcomes in patients with sacral metastatic tumors between the 2 groups
| Characteristic | PSP + RFA (Group A; n = 51) | PSP (Group B; n = 75) | P |
|---|---|---|---|
| Age (mean) (yr) | 57.22 (SD, 11.41) | 62.11 (SD, 13.37) | .132 |
| Male/female | 27:24 | 42:33 | .085 |
| Lung cancer/other cancer (No./No) | 17/34 | 27/48 | .758 |
| Postoperative radiation/no radiation (No./No.) | 17/34 | 29/46 | .542 |
| Zone I/other zones (No./No.) | 32/26 | 63/41 | .503 |
| Lesion volume (mean) (mL) | 7.22 (SD, 1.74) | 6.69 (SD, 1.96) | .124 |
| Posterior approach/other approaches (No./No.) | 19/37 | 41/50 | .183 |
| Technical success (No.) (%) | 51 (100) | 75 (100) | .999 |
| Operation time (mean) (min) | 47.56 (SD, 5.31) | 38.67 (SD, 5.19) | .002 |
| Cement leakage (No.) (%) | 10 (17.24) | 20 (19.23) | .361 |
| Cement filling volume (mean) (range) (mL) | 6.42 (SD, 1.73) (3–8) | 5.31 (SD, 1.52) (2–8) | .001 |
| Degree of cement filling (%) | 84.82% (SD, 0.37%) | 76.16% (SD, 0.77%) | .001 |
| Clinical follow-up (mean) (mo) | 10.08 (SD, 6.28) | 10.18 (SD, 5.59) | .823 |