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Results of supraspinatus atrophy grades
| Atrophy grade | Preoperative frequency | Percent | Postoperative frequency | Percent |
|---|---|---|---|---|
| 1 | 26 | 45 | 28 | 49 |
| 2 | 20 | 34 | 24 | 42 |
| 3 | 11 | 19 | 5 | 9 |
| 4 | 1 | 2 |
| Preoperative mean grade (95% CI) | Postoperative mean grade (95% CI) | Difference (95% CI) | p value |
|---|---|---|---|
| 1.8 (1.5–2.0) | 1.6 (1.4–1.7) | 0.14 (−0.4 to 0.1) | 0.241 |
CI = confidence interval.
