Table 1 Demographic, clinical, and surgical characteristics of the patients
Characteristics | Total (n = 715) | TKA (n = 319) | THA (n = 396) |
|---|---|---|---|
Gender | |||
 Male (%) | 208 (29.1) | 58 (18.2) | 150 (37.9) |
 Female (%) | 507 (70.9) | 261 (81.8) | 246 (62.1) |
Age, years (mean ± SD) | 65.1 ± 12.6 | 67.5 ± 9.2 | 63.2 ± 14.5 |
BMI, kg/m2 (mean ± SD) | 24.7 ± 4.3 | 26.1 ± 4.1 | 23.5 ± 4.0 |
Diabetes (%) | 116 (16.2) | 69 (21.6) | 47 (11.9) |
Hypertension (%) | 322 (45.0) | 178 (55.8) | 144 (36.4) |
Malignance (%) | 30 (4.2) | 13 (4.1) | 17 (4.3) |
Cardiovascular disease (%) | 84 (11.7) | 40 (12.5) | 44 (11.1) |
Stroke (%) | 95 (13.3) | 48 (15.0) | 47 (11.9) |
COPD (%) | 11 (1.5) | 5 (1.6) | 6 (1.5) |
Venous disease (%) | 24 (3.4) | 16 (5.0) | 8 (2.0) |
Previous surgery (%) | 18 (2.5) | 1 (0.3) | 17 (4.3) |
Preoperative aspirin (%) | 99 (13.8) | 52 (16.3) | 47 (11.9) |
Preoperative steroid (%) | 27 (3.8) | 7 (2.2) | 20 (5.1) |
Smoking (%) | 91 (12.7) | 23 (7.2) | 68 (17.2) |
Diagnosis | |||
 OA (%) | 333 (46.6) | 292 (91.5) | 41 (10.4) |
 RA (%) | 36 (5.0) | 27 (8.5) | 9 (2.3) |
 Femoral neck fracture (%) | 133 (18.6) | – | 133 (33.6) |
 ONFH (%) | 145 (20.3) | – | 145 (36.6) |
 DDH (%) | 60 (8.4) | – | 60 (15.2) |
 AS (%) | 8 (1.1) | – | 8 (2.0) |
Operation time, min (mean ± SD) | 109.7 ± 29.0 | 119.4 ± 22.0 | 101.9 ± 31.4 |
Intraoperative blood loss, ml (mean ± SD) | 258.8 ± 208.8 | 200.3 ± 136.3 | 306.0 ± 242.5 |
Chemical thromboprophylaxis | |||
 None (%) | 28 (3.9) | 10 (3.1) | 18 (4.5) |
 Rivaroxaban (%) | 599 (83.8) | 279 (87.5) | 320 (80.8) |
 LMWH (%) | 88 (12.3) | 30 (9.4) | 58 (14.6) |