Table 2:
Number of levels.
Levels
Instrumentation
#
Fused
%
1
26
22
85
Pedicle screws
22
21
95
Anterior plate
4
1
17
2
13
8
62
Pedicle screws
11
7
64
Anterior plate
2
1
50
3
Pedicle screws
13
10
77
4
Pedicle screws
3
2
67
5
Pedicle screws
1
1
100