Table 3.
Distribution of injuries and Kappa coefficients of reliability for coding injury subtypes for each TL injury type
| Type | Subtype | n a | Kappa |
|---|---|---|---|
| Number of raters | 2–5 | ||
| A Compression fractures | |||
| 1 Wedge/impaction | 31 (36 %) | 0.80 | |
| 2 Split/pincer type | 1 (1 %) | 0.44 | |
| 3 Incomplete burst | 24 (28 %) | 0.73 | |
| 4 Complete burst | 30 (35 %) | 0.85 | |
| Overall | 0.78 | ||
| B Tension band injuries | |||
| 1 Trans-osseous disruption | 1 (5 %) | ||
| 2 Ligamentous disruption | 21 (95 %) | ||
| Overall | 22 | 0.28 | |
| C Displacement injuries | |||
| 1 Hyperextension injury | 2 (15 %) | ||
| 2 Translation injury | 11 (85 %) | ||
| 3 Separation injury | 0 (0 %) | ||
| Overall | 13 | 0.62 | |
The sample of A-type fractures included all cases with a single compression fracture and with or without B- or C-type injury within the random sample of 110 cases. The sample of B- and C-type injuries included all such injuries identified within the complete TL case series
aEstimation of case distribution by the majority of surgeons