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Table 2 Comparison of patient characteristics and anesthesia time between ankle arthrodesis and total ankle arthroplasty groups

From: Time trends and risk factors for perioperative complications in total ankle arthroplasty: retrospective analysis using a national database in Japan

 

Total (n = 2775)

Ankle arthrodesis (n = 2310)

Total ankle arthroplasty (n = 465)

P-value

Age (years), mean ± SD

65.7 ± 11.2

64.5 ± 11.4

69.1 ± 9.2

< 0.001

 in osteoarthritis patients

66.3 ± 11.6

65.4 ± 11.8

72.1 ± 8.3

< 0.001

 in rheumatoid arthritis patients

63.9 ± 9.9

63.8 ± 10.2

64.4 ± 8.6

0.452

Sex (female)

2022 (72.9 %)

1633 (70.7 %)

389 (83.7 %)

< 0.001

Body mass index (kg/m2), mean ± SD

24.4 ± 3.9

24.5 ± 4.0

24.2 ± 3.7

0.328

Smoking

 Nonsmoker

1931 (69.6 %)

1590 (68.8 %)

341 (73.3 %)

0.043

 Ex or current smoker

323 (11.6 %)

284 (12.3 %)

39 (8.4 %)

 

 Missing

521 (18.8 %)

436 (18.9 %)

85 (18.3 %)

 

Underlying diagnosis

 Osteoarthritis

2042 (73.6 %)

1756 (76.0 %)

286 (61.5 %)

< 0.001

 Rheumatoid arthritis

733 (26.4 %)

554 (24.0 %)

179 (38.5 %)

 

Charlson Comorbidity Index

 0

2472 (89.0 %)

2049 (88.7 %)

423 (91.0 %)

0.153

  ≥ 1

303 (11.0 %)

261 (11.3 %)

42 (9.0 %)

 

Anesthesia time (minutes), mean ± SD

199 ± 91

199 ± 93

200 ± 84

0.127

  1. The values in bold indicate significant differences at the 0.007 (=0.05/7) significance level