Table 3 Statistical comparisons of testing conditions.
From: Vacuum curette lumbar discectomy mechanics for use in spine surgical training simulators
Statistical comparison of testing conditions | |||||
|---|---|---|---|---|---|
Linear tests | |||||
Comparison | Cadavers | Lumbar level | Pass number | Linear speed | Torsional speed |
Force peak | |||||
All passes | 1.46E−01 | 7.23E−02 | 2.05E−03 | 1.56E−02 | 2.16E−02 |
Pass 1 | 5.74E−01 | 1.35E−01 | – | – | – |
Pass 2–3 | 2.05E−02 | 1.52E−01 | *3.00E−01 | 8.33E−02 | 1.04E−01 |
Test method | Mann–Whitney U | Kruskal–Wallis | |||
Linear resistance | |||||
All passes | 2.36E−01 | 1.58E−01 | 1.49E−03 | 2.16E−02 | 1.88E−02 |
Pass 1 | 4.42E−01 | 1.13E−01 | – | – | – |
Pass 2–3 | 3.32E−02 | 2.49E−01 | *3.76E−01 | 8.33E−02 | 8.33E−02 |
Test method | Mann–Whitney U | Kruskal–Wallis | |||
Torsion tests | |||||
|---|---|---|---|---|---|
Comparison | Cadavers | Depth | Lumbar level | Pass number | Torsional speed |
Torque peak | |||||
All passes | 1.17E−05 | 5.69E−15 | 2.11E−10 | 1.63E−02 | 1.19E−03 |
Pass 1 | 2.13E−02 | 1.49E−05 | 4.71E−02 | – | 2.12E−01 |
Pass 2–5 | 1.93E−04 | 2.24E−11 | 2.62E−09 | 2.56E−01 | 1.04E−02 |
Test method | Mann–Whitney U | Kruskal–Wallis | |||
Torsional resistance | |||||
All passes | 1.29E−04 | 8.78E−05 | 5.27E−09 | 1.42E−03 | 5.79E−02 |
Pass 1 | 9.20E−02 | 2.69E−03 | 3.74E−02 | – | 6.82E−01 |
Pass 2–5 | 2.09E−04 | 4.34E−03 | 1.04E−07 | 6.42E−01 | 8.29E−02 |
Test method | Mann–Whitney U | Kruskal–Wallis | |||
