Table 1 Characteristics of 36 patients with fresh type II odontoid fracture who underwent ACSF or PIWF
Characteristic | ACSF (n = 11) | PIWF (n = 25) | p |
|---|---|---|---|
Age, years, mean | 42(20–66) | 42(22–70) | 0.957 |
 < 40 years, n(%) | 5(45.5) | 9(36) | 0.022 |
 40–60 years, n(%) | 3(27.3) | 14(56) |  |
 > 60 years, n(%) | 3(27.3) | 2(8) |  |
Gender, n (%) | |||
 Female | 3(27.3) | 6(24) | 0.571 |
 Male | 8(72.7) | 19(76) |  |
Causes of fractures, n(%) | |||
 Traffic accident | 5(45.5) | 9(36) | 0.716 |
 Falls | 6(54.5) | 16(64) |  |
Grauer type, n(%) | |||
 IIA | 6(54.5) | 11(44) | 0.002 |
 IIB | 5(45.5) | 9(36) |  |
 IIC | 0(0) | 6(24) |  |
Associated spinal cord injury, n(%) | 3(27.3) | 8(32) | 0.002 |
Associated other injuries, n(%) | 5(45.5) | 14(56) | 1.000 |
Interval from injury to operation, mean days (range) | 5(0.2,11) | 3.2(0.2,8) | 0.163 |
Follow-up duration (months) | 42.1 | 43.1 | 0.226 |