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Table 1 Demographic data

From: Bone restoration after revision hip arthroplasty with femoral bone defects using extensively porous-coated stems with cortical strut allografts

Parameters

Allografts group (n = 47)

No allografts group (n = 75)

P value

Male

29 (61.7%)

44 (58.7%)

0.739

Age

57.2 ± 16.5 (29–83)

53.5 ± 17.4 (33–87)

0.196

Follow-up

6.4 ± 2.5 (2.3–11.5)

6.0 ± 2.2 (2.2–11.8)

0.302

Primary diagnosis

0.958

 Osteonecrosis of the femoral head

25 (53.2%)

39 (52.0%)

 

 Developmental dysplasia of the hip

12 (25.5%)

16 (21.3%)

 

 Primary osteoarthritis

6 (12.8%)

11 (14.7%)

 

 Femoral neck fractures

3 (6.4%)

7 (9.3%)

 

 Rheumatoid arthritis

1 (2.1%)

2 (2.7%)

 

Mean time from primary to revision THA

9.3 ± 4.2 (1–18)

8.9 ± 4.9 (0–17)

0.824

Reason for revision

0.575

 AL

14 (29.8%)

29 (38.7%)

 

 PJI

16 (34.0%)

24 (32.0%)

 

 PFF

17 (36.2%)

22 (29.3%)

 

Fixation of previous femoral stems

0.739

 Cement

29 (61.7%)

44 (58.7%)

 

 Cementless

18 (38.3%)

31 (41.3%)

 

Degree of femoral bone defects (Paprosky classification)

0.106

 Type II

9 (19.1%)

20 (26.7%)

 

 Type IIIA

21 (44.7%)

36 (48.0%)

 

 Type IIIB

12 (25.5%)

19 (25.3%)

 

 Type IV

5 (10.6%)

0 (0%)

 

ETO utilized

10 (21.3%)

14 (18.7%)

0.724

  1. Categorical variables are presented as numbers (percentage). Continuous variables are presented as the means ± standard deviations (range). AL aseptic loosening, PJI periprosthetic joint infection, PFF periprosthetic femoral fracture, ETO extended trochanteric osteotomy