Table 2.
PROMs Reported Preoperatively and at 1 Year Postoperatively.
| N | Manual total knee arthroplasty | N | Robotic-assisted total knee arthroplasty | P value | |
|---|---|---|---|---|---|
| Preoperative PROMs | |||||
| SF-12 MCS | 18 | 52.5 (10.9) | 17 | 55.4 (7.8) | .361 |
| SF-12 PCS | 18 | 32.4 (10.1) | 17 | 42.3 (10.3) | .007 |
| VR-12 MCS | 0 | N/A | 105 | 55.0 (10.4) | |
| VR-12 PCS | 0 | N/A | 105 | 31.8 (9.3) | |
| Combined MCSa | 18 | 52.5 (10.9) | 109 | 55.0 (10.2) | .360 |
| Combined PCSa | 18 | 32.4 (10.1) | 109 | 32.4 (9.7) | .998 |
| KOOS-JR | 0 | N/A | 72 | 52.90 (13.2) | |
| UCLA | 17 | 5.5 (2.2) | 98 | 5.34 (2.0) | .735 |
| Overall response rate | 35 | 25.2% | 109 | 73.6% | <.001 |
| Postoperative PROMs at 1-year follow-up | |||||
| VR-12 MCS | 104 | 55.4 (9.2) | 121 | 55.9 (9.0) | .668 |
| VR-12 PCS | 105 | 41.6 (10.6) | 121 | 42.9 (9.7) | .336 |
| KOOS, JR | 88 | 72.2 (13.7) | 102 | 75.767 (12.5) | .072 |
| UCLA | 102 | 5.6 (2.3) | 111 | 6.12 (1.7) | .059 |
| Overall response rate | 107 | 73.6% | 121 | 81.8% | .095 |
PROMs patient-reported outcome measures, SF-12 MCS/PCS Short-Form 12 Health Survey–Mental Component/Physical Component Scores, VR-12 MCS/PCS Veterans RAND 12-Item Health Survey–Mental Component/Physical Component Scores, KOOS-JR, Knee Injury and Osteoarthritis Outcome Score for Joint Replacement; UCLA University of California at Los Angeles Activity Score.
a
MCS and PCS are combined from corresponding VR-12 and SF-12 components. If VR-12 data are missing but SF-12 data are present, then SF-12 data are used to impute the missing data; otherwise, VR-12 data take precedence. No patients had SF-12 data at postoperative PROM time point.