Table 3.
Pain scores and narcotic consumption
| Pain score and narcotic use | Nerve block (n = 79) | Periarticular injection (n = 81) | Δ | 95% confidence interval | p value |
|---|---|---|---|---|---|
| Pain (0 none to 10 worst); mean (SD) | |||||
| Recovery room arrival | 2.3 (2.6) | 2.6 (2.3) | −0.3 (2.5) | −1.0 to 0.5 | 0.51 |
| Patient room arrival | 1.3 (1.9) | 2.0 (1.9) | −0.7 (1.9) | −1.3 to −0.1 | 0.02 |
| Day of surgery evening | 1.6 (2.0) | 2.3 (1.9) | −0.7 (1.9) | −1.3 to −0.1 | 0.02 |
| Day 1 morning | 2.0 (2.1) | 2.5 (2.0) | −0.5 (2.0) | −1.1 to 0.2 | 0.14 |
| Day 1 afternoon* | 2.9 (2.4) | 3.0 (2.2) | −0.1 (2.3) | −0.8 to 0.6 | 0.76† |
| Day 1 evening | 2.3 (1.9) | 2.9 (2.3) | −0.6 (2.1) | −1.3 to 0.0 | 0.07 |
| Day 1 mean of morning, afternoon, and evening | 2.4 (1.6) | 2.8 (1.8) | −0.4 (1.7) | −0.9 to 0.1 | 0.15 |
| Day 2 mean of morning, afternoon, and evening | 1.7 (1.5) | 1.5 (1.4) | 0.1 (1.5) | −0.3 to 0.6 | 0.52 |
| Pain Day 1 afternoon > 3 | 27 (34%) | 29 (36%) | −0.02 | −0.16 to 0.13 | 0.83 |
| Narcotic morphine equivalents (mg); mean (SD) | |||||
| Intraoperative | 17.4 (10.1) | 23.6 (8.5) | −6.2 | −9.1 to −3.3 | < 0.001 |
| Day of surgery as needed | 4.6 (9.1) | 11.7 (13.1) | −7.3 (11.3) | −10.6 to −3.6 | < 0.001 |
| Day 1 as needed | 43 (29) | 49 (29) | −6 (29) | −15 to 3 | 0.17 |
| Day 2 as needed | 33 (28) | 30 (29) | 3 (28) | −6 to 12 | 0.51 |
| Number of patients using narcotic morphine equivalents > 0 mg | |||||
| Recovery room | 31 (39%) | 47 (58%) | −0.19 | −0.34 to −0.04 | 0.02 |
| Day of surgery as needed | 24 (30%) | 56 (69%) | −0.39 | −0.53 to −0.24 | < 0.001 |
| Day 1 as needed | 71 (90%) | 76 (94%) | −0.04 | −0.12 to 0.05 | 0.36 |
| Day 2 as needed | 72 (91%) | 68 (84%) | 0.07 | −0.03 to 0.17 | 0.17 |
* Primary outcome measure; †Wilcoxon rank-sum test p = 0.59.