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Table 2 Patient demographics stratified by interval and stem type

From: Is there a role for cementless primary stem in hip arthroplasty for early or late fixation failures of intertrochanteric fractures?

Group

Early fixation failure (≤3 months, n = 40)

P-value

Late fixation failure (> 3 months, n = 35)

P-value

Stem type

Primary stem (n = 16)

Revision stem (n = 24)

Primary stem (n = 22)

Revision stem (n = 13)

Age (years)

81.1 ± 6.6 (67–96)

80.3 ± 6.0 (70–91)

0.946

77.2 ± 14.5 (32–96)

78.8 ± 9.6 (64–94)

0.827

Sex

 Female

6 (37%)

18 (75%)

0.018

10 (45%)

8 (62%)

0.358

 Male

10 (63%)

6 (25%)

 

12 (55%)

5 (38%)

 

Body mass index

22.9 ± 3.6 (18.1–30.3)

24.7 ± 4.0 (19.2–33.7)

0.240

24.1 ± 5.7 (16.4–40.3)

24.7 ± 5.0 (18.6–32.7)

0.781

ASA

  

0.433

  

0.517

 1

0

0

 

2 (9%)

0

 

 2

8 (50%)

15 (63%)

 

13 (59%)

9 (69%)

 

 3

8 (50%)

9 (37%)

 

7 (32%)

4 (31%)

 

Charlson comorbidity index

  

0.814

  

0.545

 2

0

0

 

3 (14%)

0

 

 3

2 (13%)

3 (13%)

 

0

1 (8%)

 

 4

5 (31%)

7 (29%)

 

3 (14%)

4 (30%)

 

 5+

9 (56%)

14 (58%)

 

16 (72%)

8 (62%)

 

Bone mineral density, T-score

−3.0 ± 0.9 (−2.4- -4.0)

−3.1 ± 0.8 (−2.6- -3.8)

0.752

−3.1 ± 0.9 (−2.5- -3.7)

−3.0 ± 0.9 (−2.6- -3.7)

0.898

Interval from index procedure and hip arthroplasty (months)

2(IQR:1)

(1–3)

1(IQR:1)

(1–3)

0.073

12.5(IQR:12)

(4–72)

9(IQR:12)

(4–87)

0.987

Index procedure

  

0.177

  

0.277

 Cephalomedullary Nail

3 (19%)

10 (42%)

 

5 (23%)

6 (46%)

 

 Plate

13 (81%)

14 (58%)

 

17 (77%)

7 (54%)

 

Surgery duration (mins)

113.9 ± 39.6 (60–180)

121.3 ± 46.0 (60–240)

0689

114.7 ± 43.7 (60–215)

118.8 ± 71.4 (60–300)

0.600

Intraoperative blood loss (ml)

700.0 ± 424.3 (400–1000)

650.0 ± 295.8 (300–1000)

0.898

508.3 ± 426.3 (100–1500)

670.0 ± 495.7 (250–1450)

0.506

Length of stay (days)

8(IQR:3)

(4–94)

7.5(IQR:10)

(2–83)

0.988

7(IQR: 3)

(5–17)

7(IQR:2)

(2–19)

0.674

Follow-up duration (months)

132.0 ± 53.1

(53–229)

112.3 ± 63.0

(13–207)

0.304

122.3 ± 67.2

(27–234)

92 ± 59.5

(22–186)

0.234

  1. IQR Interquartile range, The interval between index procedure and hip arthroplasty, and length of stay were expressed as median and IQR