Table 2 Radiological indicators of the prosthesis position for the two groups (postoperatively)

Neck-shaft angle (°)

132.86 ± 4.79

133.35 ± 5.04

0.923^b

0.356

Coronal alignment

0.807^a

0.668

 Neutral

121 (95.3%)

112 (92.6%)

 Varus

4 (3.1%)

6 (5.0%)

 Valgus

2 (1.6%)

3 (2.5%)

Sagittal alignment

0.772^a

0.680

 Neutral

116 (91.3%)

114 (94.2%)

 Flexed

8 (6.3%)

5 (4.1%)

 Extended

3 (2.4%)

2 (1.7%)

 Gruen zone 1

0.90 ± 0.69

0.89 ± 0.79

1.382^b

0.167

 Gruen zone 7

0.85 ± 0.79

0.87 ± 0.75

1.758^b

0.079

Anteversion (°)

13.12 ± 2.55

13.16 ± 2.62

0.092^b

0.927

neck-preserving ratio (%)

65.44 ± 8.69

66.05 ± 7.37

0.408^b

0.683

Acetabular anteversion (°)

26.61 ± 13.99

28.41 ± 14.59

1.132^b

0.257

Acetabular inclination angle (°)

48.23 ± 5.83

47.52 ± 5.69

0.520^b

0.630

Acetabular depth (mm)

2.97 ± 0.56

2.91 ± 0.65

0.586^b

0.558

Anterior-posterior offset (mm)

48.81 ± 6.79

47.53 ± 5.69

1.644^b

0.100

Lateral offset (mm)

15.02 ± 6.25

15.34 ± 6.57

0.364^b

0.716

Difference in leg length (mm)

3.50 ± 2.79

2.85 ± 2.45

1.880^b

0.060