Skip to main content

Table 2 Intra-observer and inter-observer reliability of imaging measurement parameters

From: Change of the cross-sectional area of vastus medialis oblique in patients with recurrent patellar dislocation treated by tibial tubercle transfer combined with medial patellofemoral ligament reconstruction on axial CT

Imaging measurement parameters

Intra-observer ICC (95% CI)

Inter-observer ICC (95% CI)

Before surgery

 CSA of VMO (− 5 mm)

0.993 (0.983–0.997)

0.968 (0.926–0.986)

 CSA of VMO (0 mm)

0.994 (0.986–0.997)

0.979 (0.951–0.991)

 CSA of VMO (+ 5 mm)

0.994 (0.985–0.997)

0.982 (0.959–0.992)

 TT-TG distance

0.992 (0.981–0.997)

0.986 (0.966–0.994)

At follow-up

 CSA of VMO (− 5 mm)

0.995 (0.988–0.998)

0.990 (0.976–0.996)

 CSA of VMO (0 mm)

0.997 (0.993–0.999)

0.987 (0.970–0.995)

 CSA of VMO (+ 5 mm)

0.995 (0.988–0.998)

0.972 (0.935–0.988)

 TT-TG distance

0.993 (0.984–0.997)

0.979 (0.951–0.991)

  1. ICC intraclass correlation coefficient, CI confidence interval, CSA of VMO(− 5 mm) the cross-sectional area of vastus medialis oblique at 5 mm below the upper pole of the patella, CSA of VMO(0 mm) the cross-sectional area of vastus medialis oblique at the upper pole of the patella, CSA of VMO(+ 5 mm) the cross-sectional area of vastus medialis oblique at 5 mm above the upper pole of the patella, TT-TG tibial tubercle-trochlear groove