TABLE V.
Surgical Parameters of the Intention-to-Treat Population (N = 133)
| Variable | Autologous Iliac Bone-Graft Group (N = 68) | CBVF Group (N = 65) | Total (N = 133) | P Value |
| Could the planned surgery be performed? | 0.7131* | |||
| Yes† | 62 (93.9%) | 62 (95.4%) | 124 (94.7%) | |
| No† | 4 (6.1%) | 3 (4.6%) | 7 (5.3%) | |
| Missing† | 2 | 0 | 2 | |
| Delay from injury to open reduction and internal fixation | 0.2110‡ | |||
| No. of patients | 62 | 62 | 124 | |
| Mean and std. dev. (days) | 6.9 ± 4.2 | 6.0 ± 4.0 | 6.4 ± 4.1 | |
| Duration of surgery | 0.2689‡ | |||
| No. of patients | 62 | 62 | 124 | |
| Mean and std. dev. (min) | 112.1 ± 41.6 | 104.3 ± 36.5 | 108.2 ± 39.2 | |
| Minimum (min) | 46.0 | 50.0 | 46.0 | |
| Quartile 1 (min) | 80.0 | 75.0 | 78.5 | |
| Median (min) | 102.0 | 98.0 | 100.0 | |
| Quartile 3 (min) | 139.0 | 131.0 | 133.0 | |
| Maximum (min) | 210.0 | 215.0 | 215.0 | |
| Missing† | 6 | 3 | 9 | |
| Blood loss | 0.0007‡ | |||
| No. of patients | 60 | 59 | 119 | |
| Mean and std. dev. (mL) | 196 ± 160 | 109 ± 110 | 153 ± 144 | |
| Minimum (mL) | 0.0 | 0.0 | 0.0 | |
| Quartile 1 (mL) | 85.0 | 15.0 | 50.0 | |
| Median (mL) | 200.0 | 100.0 | 100.0 | |
| Quartile 3 (mL) | 250.0 | 150.0 | 200.0 | |
| Maximum (mL) | 850.0 | 400.0 | 850.0 | |
| Missing† | 8 | 6 | 14 | |
| Fracture reduction | 0.0420* | |||
| Closed reduction and fixation† | 0 (0%) | 4 (6.5%) | 4 (3.2%) | |
| Open reduction and fixation† | 62 (100%) | 58 (93.5%) | 120 (96.8%) | |
| Missing† | 6 | 3 | 9 | |
| Osteosynthesis material | ||||
| Lag screws | 0.0309* | |||
| Yes† | 38 (61.3%) | 49 (79.0%) | 87 (70.2%) | |
| No† | 24 (38.7%) | 13 (21.0%) | 37 (29.8%) | |
| Missing† | 6 | 3 | 9 | |
| Buttress plates | 0.5139* | |||
| Yes† | 15 (24.2%) | 12 (19.4%) | 27 (21.8%) | |
| No† | 47 (75.8%) | 50 (80.6%) | 97 (78.2%) | |
| Missing† | 6 | 3 | 9 | |
| Kirschner wires | 0.4545* | |||
| Yes† | 8 (12.9%) | 11 (17.7%) | 19 (15.3%) | |
| No† | 54 (87.1%) | 51 (82.3%) | 105 (84.7%) | |
| Missing† | 6 | 3 | 9 | |
| Angle stable plate | 0.2998* | |||
| Yes† | 49 (79.0%) | 44 (71.0%) | 93 (75.0%) | |
| No† | 13 (21.0%) | 18 (29.0%) | 31 (25.0%) | |
| Missing† | 6 | 3 | 9 | |
| Other | 0.5589* | |||
| Yes† | 2 (3.2%) | 1 (1.6%) | 3 (2.4%) | |
| No† | 60 (96.8%) | 61 (98.4%) | 121 (97.6%) | |
| Missing† | 6 | 3 | 9 |
*
Chi-square test.
†
The values are given as the number of patients, with or without the percentage in parentheses.
‡
T test.