Table 2
Postoperative complication rates. TKA = Total Knee Arthroplasty.
| TKA (n) | 1–100 | 101–200 | 201–300 | 301–400 | 401–481 | p-value |
|---|---|---|---|---|---|---|
| Postoperative complications % (n) | 10 (10) | 8.08 (8) | 5.05 (5) | 5.05 (5) | 1.01 (1) | 0.008* |
| Patellar resurfacing % (n) | 2.02 (2) | 2.02 (2) | 0 | 0 | 0 | 0.08 |
| Patellar luxation % (n) | 0 | 4.04 (4) | 1.01 (1) | 1.01 (1) | 0 | 0.393 |
| Extensor mechanism rupture % (n) | 1 (1) | 0 | 0 | 2.02 (2) | 0 | 1 |
| Periprosthetic fracture % (n) | 1 (1) | 0 | 0 | 1.01 (1) | 0 | 0.622 |
| Instability % (n) | 1 (1) | 0 | 1.01 (1) | 0 | 0 | 0.685 |
| Aseptic loosening % (n) | 1 (1) | 0 | 0 | 0 | 0 | 0.934 |
| Infection % (n) | 2.02 (2) | 2.02 (2) | 3.03 (3) | 0 | 0 | 0.125 |
| Stiffness % (n) | 2.02 (2) | 0 | 0 | 3.03 (3) | 1.01 (1) | 0.274 |
Postoperative complication rates across five patient cohorts (each ~ 100 cases). A significant reduction in overall complication rate was observed (from 10% to 1%), suggesting a learning curve effect. Significant values are marked with an asterisk (*). Other specific complications did not reach statistical significance.
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