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Table 2 Radiographic results following ceramic-on-ceramic THA

From: Fourth-generation ceramic-on-ceramic THA results in improvements in midterm outcomes compared to third-generation THA but does not resolve noise problems: a cohort study of a single-hip system

Parameters

Forte COC (n = 310)

Delta COC (n = 292)

p value

Acetabular component orientationa (°)

 Abduction angle

41.8 (25–57)

42.1 (28–58)

0.522

 Anteversion angle

15.8 (4–36)

16.2 (4–37)

0.464

Femoral component positionb

0.669

 Neutral

302 (97)

286 (98)

 Varus

8 (3)

6 (2)

 Valgus

0 (0)

0 (0)

COR positiona (mm)

 Vertical

16.9 (9.4–23.7)

16.8 (9.2–24.0)

0.733

 Horizontal

27.7 (20.6–35.3)

27.5 (20.1–35.2)

0.681

Femoral offseta (mm)

39.3 (32.8–49.5)

39.7 (33.0–49.8)

0.541

Hip offseta (mm)

67.0 (53.5–79.6)

67.2 (54.9–79.9)

0.839

Leg-length discrepancya (mm)*

2.6 (0–9.8)

2.5 (0.1–11.2)

0.677

  1. a The values are given as the average, with the range in parentheses
  2. b The values are given as the number of hips, with the percentage in parentheses
  3. * Absolute values of leg-length discrepancy were obtained
  4. THA total hip arthroplasty, COC ceramic-on-ceramic, COR center of rotation