Effects of extremity positioning on radiographic evaluation of femoral tunnel location with digitally reconstructed femoral lateral radiographs after anterior cruciate ligament reconstruction

Table 1 Inter-observer variability and standard error of measurement of quadrant methods for evaluation of tunnel aperture orifice after anatomic single-bundle anterior cruciate ligament reconstruction

	ICC^a	CI^b	SEM^c
x - Distance from posterior to anterior cortex along BL	0.971	0.962, 0.980	3.06
y - Distance from BL to femoral cortex	0.930	0.906, 0.950	2.46
m - Distance of tunnel from posterior femoral cortex to center of tunnel along BL	0.887	0.848, 0.919	3.73
n - Distance of tunnel from BL to center of tunnel perpendicular to BL	0.758	0.675, 0.827	2.80
%BL of tunnel	0.829	0.770, 0.878	1.69
%DP of tunnel	0.758	0.675, 0.827	2.36

ISSN: 1471-2342