Table 3 Comparison of two groups with ideal screw trajectory parameters
From: Digital anatomical study and clinical application of the ideal S2 alar-lliac screw trajectory
Group | Cases | Sex | Age (years) | Screws | Excellent rate (%) | Good rate (%) | |
|---|---|---|---|---|---|---|---|
Male | Female | ||||||
Guide template group | 29 | 16 | 14 | 57.8 ± 13.3 | 58 | 96.6 (56/58) | 100 (58/58) |
Free-hand group | 35 | 15 | 20 | 60.0 ± 12.3 | 70 | 90.0 (63/70) | 97.1 (68/70) |
Statistic value | - | 0.711 | -0.687 | - | 2.083 | 1.683 | |
P value | - | 0.399 | 0.495 | - | 0.273 | 0.500 | |