Table 1 Comparison of preoperative demographic data between traditional guide instrument group and designed guide instrument group
From: A new tool in percutaneous anterior odontoid screw fixation
Characteristics | Statistics | P value | |
|---|---|---|---|
Traditional guide instrument | Designed guide instrument | ||
Patients (n) | 13 | 16 | Â |
Age (years) | 49.31 ± 10.90 | 47.94 ± 11.89 | 0.751 |
Cause of injury (n) | 0.573 | ||
 Traffic accidents | 5 | 4 |  |
 Fall from height | 6 | 7 |  |
 Falls from standing | 2 | 5 |  |
Fracture type (n) | 0.715 | ||
 Type II A | 7 | 7 |  |
 Type II B | 6 | 9 |  |
 Type II C | 0 | 0 |  |
Associated spinal cord injury (n) | Â | Â | 1.000 |
 ASIA Grade C | 0 | 1 |  |
 ASIA Grade D | 3 | 3 |  |
Associated C1 fracture (n) | 3 | 4 | 1.000 |
Time between trauma and operation (d) | 3.77 ± 1.74 | 3.50 ± 1.37 | 0.644 |
Follow-up duration (months) | 15.38 ± 9.67 | 16.75 ± 10.28 | 0.718 |