Table II.
Statistical analysis of factors related to successful outcome of conservative treatment.
| Conservative group | Surgical group | P-value | |
|---|---|---|---|
| History of trauma | 21.5% (14/65 shoulders) | 24.1% (14/58 shoulders) | P = 0.731a |
| Night pain | 67.6% (44/65 shoulders) | 70.6% (41/58 shoulders) | P = 0.719a |
| Range of motion in forward elevation | 143.4 ± 25.5 (50–180) | 135.3 ± 25.9 (80–175) | P = 0.077b |
| Range of motion in external rotation | 52.2 ± 14.6 (15–80) | 35.0 ± 20.1 (0–80) | P < 0.001b |
| Impingement sign | 30.7% (20/65 shoulders) | 79.3% (46/58 shoulders) | P < 0.001a |
| Muscle atrophy | 78.0 ± 10.8% (50%–95%) | 69.8 ± 14.7% (30%–91%) | P = 0.031b |
| Intramuscular tendon | 58.4% (38/65 shoulders) | 24.1% (14/58 shoulders) | P < 0.001a |
aTested by chi-square test.
bTested by Mann-Whitney test.