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Table 2 Baseline characteristics of the two stem groups

From: Short-term clinical and radiological results of two different design metaphyseal fitting femoral stems in total hip arthroplasty: a prospective, randomized trial

Parameters

Group A

Group B

P value

No. of patients (hips)

45(45)

45(45)

-

Gender, no. (%)

0.202 c

Male

16 (35.56)

23 (51.11)

 

Female

29 (64.44)

22 (48.89)

 

Age (years) d

63.89 ±8.56

63.49±8.16

0.805 b

Weight (kg) d

80.29±14.06

81.28±14.83

0.942 b

Height (m) d

1.68±0.08

1.69±0.1

0.764 a

BMI (kg/m2) d

28.45±4.95

28.52±4.31

0.869 b

CCI d

2.38±1.21

2.2±1.16

0.541 b

Femoral canal (Dorr type), No. (%)

0.672 c

Type A

12 (26.67)

14 (31.11)

 

Type B

28 (62.22)

24 (53.33)

 

Type C

5 (11.11)

7 (15.56)

 

Principal diagnosis, no. (%)

0.519 c

Osteonecrosis

2 (4.44)

0 (0)

 

DDH

8 (17.78)

10 (22.22)

 

Osteoarthritis

31 (68.89)

30 (66.67)

 

Traumatic arthritis

4 (8.88)

4 (8.88)

 

Rheumatoid arthritis

0 (0)

1 (2.22)

 

Side, no. (%)

0.397 c

Right

22 (48.89)

27 (60)

 

Left

23 (51.11)

18 (40)

 

Length of hospital stay (days) d [min., max.]

4.47 (0.99)

[2, 7]

4.4 (0.75)

[3, 6]

0.719 b

Estimated blood loss (ml) d [min., max.]

1037.58 (156.85)

[613.14, 1245.39]

994.01 (216.01)

[545.86, 1530.17]

0.276 a

Operation time (minutes) d [min., max.]

64.6 (15.67)

[40, 95]

60.18 (12.78)

[42, 95]

0.146 a

Femoral stem offset, no. (%)

0.139 c

Standard

20(44.44)

28 (62.22)

 

High

25(55.56)

17(37.78)

 

Bearing surface, no. (%)

0.80 c

Ceramic on ceramic

36 (80)

34(75.55)

 

Ceramic on polyethylene

9(20)

11(24.45)

 

Femoral head size, no. (%)

0.673 c

32mm

22(48.89)

25(55.56)

 

36mm

23(51.11)

20(44.44)

 
  1. aStudent’s t test
  2. bWilcoxon’s rank-sum test
  3. cPearson’s chi-squared test
  4. dThe value is given as the mean and standard deviation
  5. No. number, BMI body mass index, CCI Charlson’s Comorbidity Index, DDH developmental hip dysplasia