Table 1 A complete overview of the results regarding the starting points of the freehand and the AR PAO of the four osteotomies and the retroacetabular angle for both the PAO and the non-PAO surgeon

 Supraacetabular (saOT)

1.2 mm [0.37, 2.74; ± 0.77]

1.5 mm [0.08, 3.22; ± 1.01]

0.424

 Pubis (pOT)

2.1 mm [0.61, 4.04; ± 1.10]

3.5 mm [0.42, 6.51; ± 2.29]

0.067

 Ischium (iOT)

2.4 mm [0.34, 12.6; ± 3.12]

2.7 mm [0.7, 7; ± 1.67]

0.762

 Retroacetabular (raOT)

2.0 mm [0, 6.4; ± 1.65]

1.8 mm [0, 4.9; ± 1.58]

0.688

Osteotomies (non-PAO surgeon)

Freehand PAO [range (min., max.); ± SD]

Mean distance

Augmented reality PAO [range (min., max.); ± SD]

Mean distance

p value

 Supraacetabular (saOT)

2.4 mm [0.53, 4.74; ± 1.32]

1.5 mm [0.00, 3.77; ± 1.56]

0.523

 Pubis (pOT)

6.1 mm [2.97, 12.02; ± 2.73]

4.5 mm [1.40, 15.05; ± 3.64]

0.544

 Ischium (iOT)

3.2 mm [0.10, 10.25; ± 2.95]

1.3 mm [0.00, 5.36; ± 1.58]

0.030

 Retroacetabular (raOT)

2.6 mm [0.51, 5.02; ± 1.48]

1.8 mm [0, 7.18; ± 1.92]

0.812

 Angle (PAO surgeon)

Freehand PAO [range (min., max.); ± SD]

Augmented reality PAO [range (min., max.); ± SD]

p value

 Retroacetabular angle

11.7° [7.53, 20.55; ± 3.52]

7.8° [4.21, 14.11; ± 2.67]

0.0027

Angle (non-PAO surgeon)

Freehand PAO [range (min., max.); ± SD]

Augmented reality PAO [range (min., max.); ± SD]

p value

 Retroacetabular angle

8.87° [3.03, 15.75; ± 3.74]

7.23° [2.86, 13.89; ± 3.16]

0.554