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Figures
- FIG 1.
Drawings show the puncture needles in place for the 4 different approaches: the transiliac approach (A), short-axis technique of posterior approach (B), long-axis technique of posterior approach (C), anterior-oblique approach (D), and interpedicular approach (E).
- FIG 2.
PSP procedure. A–C, Metastatic lesions in the sacral ala and bodies can be seen on enhanced sagittal and axial T1-weighted MR imaging and sagittal reconstruction CT images. D and E, Radiographs obtained during percutaneous cement injection with the patient in the supine position. F and G, After PSP, there is homogeneous and sufficient distribution of bone cement in the lesions.
Tables
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
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