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Table 2 Comparison of demographic data and plain radiographic evaluations between the radiolucent lines (−) and the radiolucent lines (+) groups (mean ± standard deviation)

From: Radiographic assessment of radiolucent lines around a highly porous titanium cup (Tritanium) using digital tomosynthesis, after total hip arthroplasty

 

RL (−) group (n = 35)

RL (+) group (n = 20)

p value

Age (years)

62.3 ± 12.0

60.0 ± 15.7

0.554

Sex male/female (n)

5/30

6/14

0.161

BMI (kg/m2)

24.7 ± 5.0

24.3 ± 4.0

0.274

Diagnosis OA/ON

25/10

16/4

0.357

Approach AL-S/PL

30/5

13/7

0.074

CE angle (degrees)

29.6 ± 19.1

26.5 ± 16.2

0.535

Sharp angle (degrees)

41.4 ± 5.7

41.6 ± 5.9

0.908

Cup diameter (mm)

49.0 ± 2.9

49.9 ± 4.1

0.786

Screw (n)

1.1 ± 0.8

1.5 ± 0.9

0.137

Cup abduction angle (degrees)

39.8 ± 4.5

40.1 ± 4.6

0.851

Cup CE angle (degrees)

29.7 ± 9.2

23.8 ± 10.4

0.030

Cup abduction angle 2 years postoperatively (degrees)

39.9 ± 4.5

40.1 ± 4.6

0.132

  1. RL radiolucent line, BMI body mass index, OA osteoarthritis, ON osteonecrosis, AL-S anterolateral-supine approach, PL posterolateral approach, CE center edge, RL radiolucent line