Table 1 Patient characteristics of the study cohort (n = 87).

From: Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA

Age at surgery (in years; mean ± SD)

60.9 ± 7.8

Gender

Male

41 (47.1%)

Female

46 (52.9%)

BMI (median; IQR)

28.9 [25.2; 31.2]

Side

Left

43 (49.4%)

Right

44 (50.6%)

Length of hospital stay (in days; median; IQR)

7 [6; 8]

DORR types

A

23 (26.4%)

B

57 (65.5%)

C

7 (8.1%)

ASA

1

10 (11.9%)

2

54 (64.3%)

3

18 (21.4%)

4

2 (2.4%)

Head diameter

32 mm

5 (5.8%)

36 mm

82 (94.2%)

Cup size (median; IQR)

54 [52; 56]

Shaft size (median; IQR)

6 [5; 7]

Total subsidence (in mm; median; IQR)

6 weeks

0.25 [0.05; 0.9]

Increase (in mm; median; IQR)

 + 0.2 [0.1; 0.5]

3 months

0.55 [0.2; 1.25]

Increase (in mm; median; IQR)

 + 0.25 [0.1; 0.5]

6 months

0.9 [0.4; 1.8]

Increase (in mm; median; IQR)

 + 0.25 [0.1; 0.5]

12 months

1.2 [0.5; 2.15]

Increase (in mm; median; IQR)

 + 0.3 [0.1; 0.6]

24 months

1.55 [0.7; 2.75]

Increase (in mm; median; IQR)

 + 0.25 [0.1; 0.5]

36 months

2.0 [0.95; 3.35]

  1. SD Standard deviation, BMI Body mass index, IQR Interquartile range.