Table 3 Reduction quality evaluations of the pelvis and acetabulum and inter-observer reliability

Matta’s criteria

0.658

Matta’s criteria (X ray)

 Excellent

25

Anteroposterior view

 Good

1

 Fair

0

 Poor

0

 Excellent

17

0.988

 Fair

8

 Poor

2

  Iliac oblique view

 Excellent

17

0.972

 Fair

9

 Poor

1

  Obturator oblique view

 Excellent

17

0.985

 Fair

5

 Poor

5

Sagi

CT scan (residual step-off, mm)

 Inlet ratio

0.96 ± 0.06

0.921

 Axial

1.62 ± 1.56

0.988

 Outlet ratio

1.02 ± 0.17

0.973

 Coronal

2.63 ± 2.57

0.993

 Sagittal

1.27 ± 1.50

0.998

Henderson’s criteria^a

-3.28 ± 10.24

-

Lefaivre’s method^a

-9.10 ± 11.15

-