Table 2. Incidence of VTE in hospitalization and within 90 days after hip and knee replacement.
| Type of surgery | Within 90 days after surgery | In hospitalization | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VTE | P value* | DVT | P value* | PE | P value* | VTE | P value* | DVT | P value* | PE | P value* | |
| Hip (n=22,127) | 853 (3.9%) | 597 (2.7%) | 327 (1.5%) | 600 (2.7%) | 416(1.9%) | 218 (1.0%) | ||||||
| Primary hip hemiarthroplasty (n=12,655) | 572 (4.5%) | <0.001 | 358 (2.8%) | 0.040 | 266 (2.1%) | <0.001 | 381 (3.0%) | 0.002 | 232 (1.8%) | 0.028 | 175 (1.4%) | <0.001 |
| Primary total hip arthroplasty (n=7,152) | 203 (2.8%) | 173 (2.4%) | 42 (0.6%) | 157 (2.2%) | 132 (1.8%) | 30 (0.4%) | ||||||
| Revision hip arthroplasty (n=1,448) | 58 (4.0%) | 51 (3.5%) | 12 (0.8%) | 47 (3.2%) | 41 (2.8%) | 8 (0.6%) | ||||||
| Knee (n=52,882) | 1,990 (3.8%) | 1,699 (3.2%) | 355 (0.7%) | 1547 (2.9%) | 1,351(2.6%) | 226 (0.4%) | ||||||
| Unilateral primary total knee arthroplasty (n=28,653) | 1,119 (3.9%) | <0.001 | 966 (3.4%) | <0.001 | 186 (0.6%) | 0.097 | 867 (3.0%) | <0.001 | 769 (2.7%) | <0.001 | 114 (0.4%) | 0.293 |
| Bilateral primary total knee arthroplasty (n=20,769) | 785 (3.8%) | 663 (3.2%) | 149 (0.7%) | 615 (3.0%) | 528 (2.5%) | 100 (0.5%) | ||||||
| Primary unicompartmental knee arthroplasty (n=1,315) | 14 (1.1%) | 11 (0.8%) | 4 (0.3%) | 11 (0.8%) | 8 (0.6%) | 3 (0.2%) | ||||||
| Revision knee arthroplasty (n=1,447) | 57 (3.9%) | 45 (3.1%) | 15 (1.0%) | 42 (2.9%) | 35 (2.4%) | 8 (0.6%) | ||||||
| Overall (n=75,009) | 2,843 (3.8%) | 2,296 (3.1%) | 682 (0.9%) | 2,147 (2.9%) | 1,767 (2.4%) | 444 (0.6%) | ||||||
*Chi-square homogeneous test for comparing the incidence among types of arthroplasties within the category of hip or knee. VTE, Venous thromboembolism; DVT, Deep vein thrombosis; PE, Pulmonary embolism.