Table 3 Comparisons between patients in the oblique view and late partial weight-bearing group (OL group) and control group for the radiographic outcomes.

Lateral centre-edge angle, º

 Pre-operative

13.2 ± 6.7 (− 7.0–24.4)

12.9 ± 6.3 (− 4.3–22.0)

0.883

 At 1 year post-operatively

39.2 ± 6.0 (27.1–56.4)

33.7 ± 5.9 (19.1–49.6)

< 0.001*

 Amount of correction

26.1 ± 6.7 (13.8–42.5)

20.8 ± 6.1 (8.1–36.5)

< 0.001*

Acetabular roof obliquity, º

 Pre-operative

18.0 ± 6.3 (5.5–30.7)

16.4 ± 6.6 (4.9–32.6)

0.186

 At 1 year post-operatively

− 2.6 ± 5.9 (− 18.6–11.8)

0.4 ± 4.5 (− 14.7–8.9)

< 0.001*

 Amount of correction

− 20.6 ± 5.9 (− 37.6–− 7.5)

− 16.0 ± 5.1 (− 26.6–− 4.9)

< 0.001*

Head lateralisation index

 Pre-operative

0.55 ± 0.08 (0.44–0.79)

0.56 ± 0.06 (0.45–0.82)

0.093

 At 1 year post-operatively

0.51 ± 0.08 (0.32–0.69)

0.57 ± 0.09 (0.37–0.89)

< 0.001*

 Minimal post-operative thickness of the ischium (mm)

18.0 ± 6.3 (5.5–30.7)

13.6 ± 3.6 (5.3–20.9)

0.018*

 Width of gap at pubic osteotomy site (mm)

1.5 ± 2.2 (0–9.4)

4.7 ± 3.7 (0–21.7)

< 0.001*

Tönnis grade (0:1:2:3), no. of hips

 Pre-operative

28:29:1:0

38:19:2:0

0.107

 At 1 year post-operatively

28:29:1:0

38:17:4:0

0.158

Harris hip score (points)

 Pre-operative

 Total

72.4 ± 12.9 (33–96)

75.1 ± 10.1 (54–96)

0.407

 Pain

23.4 ± 7.1 (10–40)

25.3 ± 8.4 (10–40)

0.162

 Function

40.1 ± 8.0 (13–47)

41.1 ± 4.6 (29–47)

0.603

 Absence of deformity

4.0 ± 0 (4–4)

4.0 ± 0 (4–4)

 Range of motion

4.9 ± 0.4 (4–5)

4.8 ± 0.5 (3–5)

0.057

At 1 year post-operatively

 Total

95.3 ± 6.4 (72–100)

89.0 ± 11.5 (44–100)

< 0.001*

 Pain

41.1 ± 3.6 (30–44)

37.0 ± 7.5 (10–44)

< 0.001*

 Function

45.3 ± 4.0 (25–47)

44.2 ± 5.4 (25–47)

< 0.001*

 Absence of deformity

4.0 ± 0 (4–4)

4.0 ± 0 (4–4)

 Range of motion

4.9 ± 0.3 (3–5)

4.8 ± 0.4 (4–5)

0.057