A Cadaveric Comparative Study on the Surgical Accuracy of Freehand, Computer Navigation, and Patient-Specific Instruments in Joint-Preserving Bone Tumor Resections
Table 1
Location accuracy (56 entry and 56 exit cuts) and mean bone cutting time for each technique.
Parameters
Freehand
CAS
PSI
CAS + PSI
Mean location accuracy (mm) (95% CI)
9.2 ± 3.3 (8.0; 10.3)
3.6 ± 2.1 (2.5; 4.8)
1.9 ± 1.1 (0.8; 3.0)
2.0 ± 1.0 (0.9; 3.1)
Plane direction
Entry cuts (mm)
4.3 ± 2.7
2.1 ± 1.3
1.2 ± 0.9
0.8 ± 0.5
Exit cuts (mm)
6.8 ± 3.4
3.1 ± 2.2
2.3 ± 1.5
1.6 ± 0.8
Mean bone resection time (minutes)
6.8 ± 1.1
17.0 ± 2.4
4.8 ± 1.0
12.8 ± 3.8
Standard deviation is listed for each value. 95% CI is given for the LA.
