Table 3
Peri- and post-operative outcomes of the PS and CR BTKA groups after propensity score matching.
| PS BTKA (n = 43) mean (95%CI) | CR BTKA (n = 43) mean (95%CI) | p value | |
|---|---|---|---|
| Operative time (min) | 124.24 (119.23–129.24) | 117.83 (112.83–122.83) | 0.08 |
| Drain output (mL) | 194.89 (172.62–217.17) | 206.44 (184.17–228.72) | 0.47 |
| Calculated blood loss (CBL) (mL) | 724.89 (620.19–829.58) | 886.23 (765.55–1006.91) | 0.05 |
| Blood transfusion (%) | 17 (39.53) | 18 (41.86) | 1.0 |
| Visual analog scale for postoperative pain intensity | |||
| 6 h | 3.78 (3.16–4.40) | 5.74 (5.12–6.36) | <0.01* |
| 12 h | 4.74 (4.11–5.36) | 5.80 (5.17–6.43) | 0.02* |
| 24 h | 4.47 (3.83–5.11) | 4.26 (3.63–4.90) | 0.66 |
| 48 h | 3.88 (3.22–4.53) | 4.51 (3.86–5.16) | 0.18 |
| 72 h | 3.28 (2.61–3.95) | 3.95 (3.28–4.62) | 0.17 |
| 96 h | 2.63 (1.94–3.32) | 3.02 (2.33–3.71) | 0.44 |
| Morphine consumption (mg) | |||
| 24 h | 14.86 (11.82–17.89) | 19.67 (16.64–22.71) | 0.03* |
| 48 h | 19.74 (15.82–23.67) | 26.87 (22.95–30.80) | 0.01* |
| Knee flexion angle (°) | |||
| 24 h | 55.92 (51.03–60.80) | 59.33 (54.44–64.21) | 0.34 |
| 48 h | 75.44 (70.56–80.33) | 66.60 (61.72–71.49) | 0.01* |
| 72 h | 86.79 (81.91–91.68) | 79.53 (74.65–84.42) | 0.04* |
| 96 h | 90.41 (85.53–95.30) | 86.31 (81.43–91.20) | 0.25 |
| LOS (days) | 5.70 (5.23–6.17) | 5.58 (5.11–6.04) | 0.70 |
| OKS at 1 year of follow-up | 42.45 ± 2.21 | 42.3 ± 2.32 | 0.84 |
min = minutes, mL = milliliters, h = hours, mg = milligrams, ° = degree, PONV = postoperative nausea vomiting, LOS = length of stay, 95% CI = 95% confidence interval. * Statistically significant (p < 0.05), OKS = Oxford Knee Score.
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