TABLE 2.
Surgical data and clinical outcomes in the CM‐TKA and RA‐TKA groups
| Parameter | RA‐TKA (n = 37) | CM‐TKA (n = 35) | Statistical value | p value |
|---|---|---|---|---|
| Preoperative functional assessment | ||||
| KSS | 32 (22, 54) | 28 (18, 37) | Z = −1.793 | 0.073 b |
| WOMAC | 159.8 (42.8) | 162.9 (42.4) | t = −0.315 | 0.754 a |
| ROM (°) | 105 (90,120) | 105 (90,120) | Z = −0.361 | 0.718 b |
| Operation and LOS | ||||
| Operative duration (min) | 154.3 (20.7) | 115.2 (30.2) | t = 0.815 | 0.001 a |
| Intraoperative blood loss (ml) | 933.0 (453.7) | 863.4 (457.5) | t = 0.648 | 0.519 a |
| LOS (day) | 9.1 (2.0) | 8.4 (2.1) | t = −1.370 | 0.175 a |
| Complications | ||||
| Day 30 DVT (n, %) | 10 (27.8) | 11 (31.4) | χ2 = 0.114 | 0.736 c |
| Postoperative functional assessment | ||||
| Day 90 KSS | 67 (58.3,72) | 66(61,71) | Z = ‐0.547 | 0.584 b |
| Day 90 WOMAC | 12.5 (13.2) | 19.4 (31.4) | t = −1.206 | 0.232 a |
| Day 90 ROM (°) | 115 (110, 125) | 120 (105, 130) | Z = −0.903 | 0.366 b |
Abbreviations: CM‐TKA, conventional manual total knee arthroplasty; DVT, deep vein thrombosis; KSS, American Knee Society Score; LOS, length of stay; RA‐TKA, robot‐assisted total knee arthroplasty; ROM, range of motion; WOMAC, Western Ontario McMaster Universities Osteoarthritis Index
a
Student's t‐test
b
Mann–Whitney U‐test
c
Pearson chi‐square test.