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Fusion mass shape in terms of fusion mass Cobb angle and fusion mass shift
| Unbalanced fusion mass | Group | Mean | SD | 95% CI | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Fusion mass Cobb angle (°) | Balanced | 13 | 4 | 12 | 14 |
| Unbalanced | 12 | 6 | 9 | 16 | |
| Fusion mass shift (mm) | Balanced | 11 | 6 | 0 | 20 |
| Unbalanced | 25 | 3 | 21 | 30 | |
Balanced group = fusion mass shift 20 mm or less; Unbalanced group = fusion mass shift greater than 20 mm.
