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Table 2 Leg shortening: baseline patient characteristics after matching

From: Total hip arthroplasty: leg length inequality impairs functional outcomes and patient satisfaction

Baseline characteristics

 

Controls (N = 825)

Cases (N = 275)

Sex

M

50.2%

50.2%

 

F

49.8%

49.8%

Age at procedure (years)

Mean (SD)

67 (9)

67 (9)

Weight (kg)

Mean (SD)

75 (14)

75 (13)

Height (cm)

Mean (SD)

167 (9)

167 (9)

Charnley class

A

59.7%

62.2%

 

BB

17.5%

16.8%

 

B

20.9%

18.9%

 

C

1.9%

2.1%

Previous Surgery

Yes

4.0%

4.7%

Clinic Size

small

10.1%

10.5%

 

medium

32.6%

26.6%

 

large

57.3%

62.9%

Fixation of components

all cemented

18.3%

16.3%

 

all uncemented

17.8%

16.7%

 

hybrid

50.2%

50.6%

 

reverse hybrid

13.7%

16.4%

Duration of procedure

<90 min

46.9%

48.0%

 

90 min > x <135 min

40.9%

42.9%

 

>135 min

12.2%

9.1%

Decade of procedure

1970's

5.2%

1.1%

 

1980's

44.5%

48.0%

 

1990's

49.0%

49.8%

 

after year 2000

1.3%

1.1%

  1. Abbreviation: SD = standard deviation.