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Table 2 Follow-up datas

From: Cementless total hip arthroplasty for treatment of acetabular protrusion secondary to rheumatoid arthritis

Follow-up index

Data

Cases (hips)

45 (56)

Operation time (min)

95.53 ± 22.45

Blood loss (ml)

156.16 ± 69.25

Bone graft volume (cm3)

40.59 ± 5.53

Length of stay (days)

9.66 ± 1.83

Follow-up time (years)

5.20 ± 1.20

Distance of acetabular protrusion (mm)

10.97 ± 3.08

The hip rotation center (preoperative)

 Horizontal distance

10.40 ± 2.50 mm

 Vertical distance

72.36 ± 3.10 mm

The hip rotation center (postoperative)

 Horizontal distance

24.03 ± 1.77 mm

 Vertical distance

92.48 ± 5.31 mm

The length difference of both lower limbs (preoperative)

23.64 ± 5.00 mm

The length difference of both lower limbs (Postoperative)

5.73 ± 3.05 mm

ROM of hip joint (°) (preoperative)

 Flexion and extension motion

39.48 ± 8.36°

 Abduction motion

10.86 ± 4.34°

ROM of hip joint ((°)) (postoperative)

 Flexion and extension Motion

103.07 ± 7.64°

 Abduction motion

36.75 ± 3.99°

Preoperative Harris score

37.84 ± 4.74

Postoperative Harris score

89.55 ± 4.05

Preoperative VAS score

5.21 ± 1.11

Postoperative VAS score

0.98 ± 0.82