Table 1 Demographic and clinical data of the study
Items | Number (n = 31) | Mean/median | P value |
|---|---|---|---|
Gender | |||
Male | 9 (29.0%) | ||
Female | 22 (71.0%) | ||
Age (years) | 36.77 ± 11.17 | ||
< 37 | 16 (51.6%) | ||
≥37 | 15 (48.4%) | ||
Surgical approach | |||
Posterior approach | 27 (87.1%) | ||
Anterior and combined approach | 4 (12.9%) | ||
Tumor size (cm) | 10 (IQR = 7) (range, 5 to 21) | ||
< 11 | 17 (54.8%) | ||
≥11 | 14 (45.2%) | ||
Length of hospital stay | 14 (IQR = 11) (range, 8 to 86) | ||
Posterior approach | 27 (87.1%) | 12 (IQR = 10) (range, 8 to 45) | P = 0.002 |
Anterior and combined approach | 4 (12.9%) | 35 (IQR = 53.5) (range, 22 to 86) | |
Pathology | |||
Benign | 24 (77.4%) | ||
Intermediate | 1 (3.2%) | ||
Malignant | 6 (19.4%) | ||
Body mass index (BMI) | |||
< 18.5 | 2 (6.5%) | ||
18.5–23.9 | 16 (51.6%) | ||
24.0–27.9 | 9 (29.0%) | ||
≥28.0 | 4 (12.9%) | ||
Adjacent bone resection | |||
No | 20 (64.5%) | ||
Coccygectomy | 8 (25.8%) | ||
Coccygectomy plus partial sacrectomy | 3 (9.7%) | ||
Co-morbidity | |||
No | 20 (64.5%) | ||
Intraoperative complications | 13 (41.9%) | ||
Postoperative complications | 6 (19.4%) | ||
Operative time (minutes) | 170 (IQR = 125) (range, 40 to 660) | ||
Posterior approach | 27 (87.1%) | 150 (IQR = 90) (range, 40 to 355) | P = 0.006 |
Anterior and combined approach | 4 (12.9%) | 292.5 (IQR = 205) (range, 215 to 660) | |
Sacral levels of the superior margin | |||
L5 vertebra | 1 (3.2%) | ||
S1 vertebra | 4 (12.9%) | ||
S2 vertebra | 4 (12.9%) | ||
S3 vertebra | 4 (12.9%) | ||
Below S3 vertebra | 18 (58.1%) | ||
Preoperative workup | |||
Computed tomography (CT) | 31 (100%) | ||
Magnetic resonance imaging (MRI) | 7 (22.6%) | ||