Table 2:
Diagnostic utility of increased stir signala at the PAOAAM in detecting the presence of an acute C1–C2 fracture
| C1–C2 (n = 81/87) vs All Controls (n = 57/174) | C1–C2 (n = 81/87) vs NF (n = 6/87) | C1–C2 (n = 81/87) vs OF (n = 51/87) | |
|---|---|---|---|
| Sensitivity (95% CI) | 93.1% (85.6%–97.4%) | 93.1% (85.6%–97.4%) | 93.1% (85.6%–97.4%) |
| Specificity (95% CI) | 67.2% (59.7%–74.2%) | 93.1% (85.6%–97.4%) | 41.4% (30.9%–52.5%) |
Note:—C1–C2 indicates all patients with C1–C2 fractures on CT, with or without PAOAAM or another posterior ligament signal; NF, patients with a history of trauma without fracture on CT, with or without PAOAAM or another interspinous ligament signal; OF, patients with cervical spine fracture other than C1–C2 on CT, with or without PAOAAM or another interspinous ligament signal; controls, no cervical fracture plus other cervical fracture with or without PAOAAM or another interspinous ligament signal.
a
Increased STIR Signal in PAOAAM with or without increased signal in other cervical ligaments.