Stability of the Subaxial Spine after Penetrating Trauma: Do Classification Systems Apply?

Table 4

Denis Classification.

	Number
Number of Columns Involved
1 Column	12	38.7
2 Columns	9	29.0
3 Columns	10	32.2
Column Injuries
Anterior	20	52.6
Middle	18	47.4
Posterior	20	52.6
Columns Involved
Anterior only	3	7.9
Middle only	0	0.0
Posterior only	9	23.7
Anterior/Middle	11	28.9
Posterior/Middle	1	2.6
Anterior/Middle/Posterior	10	26.3