Table 3.
Surgical outcomes of primary total knee arthroplasty (TKA) presented as n (%)
| Total (n=17,994) |
Female (n=11,669) |
Male (n=6,325) |
P-value | |
|---|---|---|---|---|
| In-Hospital Complications | ||||
| Overall complications | 324(1.80%) | 195 (1.67%) | 129 (2.04%) | 0.076 |
| Myocardial Infarction | 60 (0.33%) | 35 (0.30%) | 25 (0.40%) | 0.28 |
| Venous thromboembolism | 184(1.02%) | 119 (1.02%) | 65 (1.03%) | 0.96 |
| Surgical wound infection | 60 (0.33%) | 29 (0.25%) | 31 (0.49%) | 0.007 |
| Prosthesis failure or device complication | 30 (0.17%) | 16 (0.14%) | 14 (0.22%) | 0.186 |
| 30-day Complications | ||||
| Overall complications | 1005 (5.59%) | 614 (5.26%) | 391(6.18%) | 0.010 |
| Myocardial Infarction (MI) | 89 (0.49%) | 50 (0.43%) | 39 (0.62%) | 0.086 |
| Venous thromboembolism (VTE) | 482 (2.68%) | 305 (2.61%) | 177 (2.80%) | 0.46 |
| Surgical wound infection | 423 (2.35%) | 248 (2.13%) | 175 (2.77%) | 0.007 |
| Prosthesis failure or device complication | 55 (0.31%) | 33 (0.28%) | 22 (0.35%) | 0.451 |
| Readmission and Mortality | ||||
| 30-day readmission | 1061 (5.90%) | 635 (5.44%) | 426 (6.74%) | 0.0004 |
| 30-day mortality1 | 46 (0.26%) | 24 (0.21%) | 22 (0.35%) | 0.071 |
| 1 year mortality1 | 220 (1.22%) | 119 (1.02%) | 101 (1.60%) | 0.0008 |
| Revision Rates2 | ||||
| 1 year revision | 298 (1.57%) | 162 (1.39%) | 136 (1.76%) | <0.0005 |
| 5 year revision | 1012 (5.66%) | 627 (5.35%) | 385 (6.23%) | 0.01 |
1
Mortality (#patients who died/ total #patients);
2
Revision rates estimated using the Kaplan-Meier method; p-values are based on the log-rank test