Table 1.
Preoperative characteristics of patients
| Characteristic/variable | THA | TKA | UKA | Total |
|---|---|---|---|---|
| n | 887 | 645 | 36 | 1,568 |
| Age | 63 ± 13 (17–93) | 66 ± 10 (42–91) | 61 ± 10 (44–84) | 65 ± 12 (17–93) |
| Male gender | 342 (38.6 %) | 212 (30.3 %) | 15 (37.5 %) | 569 (36.3 %) |
| Height (m) | 1.66 ± 0.10 | 1.64 ± 0.11 | 1.65 ± 0.11 | 1.65 ± 0.10 |
| (1.33–2.06) | (1.12–1.93) | (1.47–1.95) | (1.12–2.06) | |
| Weight (kg) | 81 ± 20 (36–152) | 85 ± 19 (45–160) | 81 ± 16 (52–123) | 83 ± 20 (36–160) |
| BMI (kg/m2) | 29 ± 6.4 (15–58) | 32 ± 6.5 (18–64) | 30 ± 4.6 (18–39) | 30 ± 6.8 (15–64) |
| Diagnoses | ||||
| Osteoarthritis | 776 (87 %) | 559 (87 %) | 33 (92 %) | 1368 (87.2 %) |
| Rheumatoid arthritis | 4 (0.5 %) | 16 (2.5 %) | 0 | 20 (1.3 %) |
| Post-traumatic arthritis | 20 (2.3 %) | 17 (2.6 %) | 0 | 37 (2.4 %) |
| DDH | 20 (2.3 %) | NA | NA | 20 (2.3 %) |
| Avascular necrosis | 51 (5.7 %) | 6 (0.9 %) | 3 (8 %) | 60 (3.8 %) |
| Other | 16 (1.8 %) | 7 (1.1 %) | 0 | 23 (1.5 %) |
| History of VTE | ||||
| History of VTE | 46 (5.2 %) | 24 (3.7 %) | 0 | 70 (4.5 %) |
| History of PE | 9 (1 %) | 8 (1.2 %) | 0 | 17 (1.1 %) |
| History of DVT | 43 (4.8 %) | 20 (3.2 %) | 0 | 63 (4 %) |
| Bilateral single-stage procedure | 42 (4.7 %) | 55 (8.5 %) | 2 (5.6 %) | 99 (6.3 %) |
Mean ± SD (range) and n (%) are presented for continuous and discrete outcomes, respectively
THA total hip arthroplasty, TKA total knee arthroplasty, UKA unicompartmental knee arthroplasty, BMI body mass index, DDH developmental dysplasia of the hip, NA not applicable, VTE venous thromboembolism, PE pulmonary embolism, DVT deep vein thrombosis