Table 2 Pullout strength of the first and second sequence with different screw types
Type of primary screw | Pullout strength (N) of the first sequence | Pullout strength (N) of the second sequence Type of revision screw | ||||
|---|---|---|---|---|---|---|
STL | DLT | MSLT | PUDL | 6.5 mm diameter. Same screw design | ||
STL | 1,538.3 ± 13.86 | 1,047.8 ± 14.47 | 1,056.4 ± 17.94 | 1,267.4 ± 24.34 | 1,688.0 ± 20.44 | |
DLT | 1,519.0 ± 18.19 | 1,336.6 ± 25.35 | 1,066.4 ± 18.91 | 1,263.4 ± 19.02 | 1,685.4 ± 25.07 | |
MSLT | 1,742.6 ± 16.01 | 1,310.4 ± 24.86 | 1,146.6 ± 27.40 | 1,387.0 ± 21.83 | 1,302.4 ± 16.89 | |
PUDL | 1,399.6 ± 10.80 | 1,188.4 ± 13.37 | 1,168.0 ± 11.82 | 1,184.8 ± 14.12 | 1,555.6 ± 14.76 | |