Table 1.
Morphological classification of S1 lamina
| Lamina morphology | Degree of defect | |||||
|---|---|---|---|---|---|---|
| I | II | III | IV | V | Total | |
| a | 0 | 8 | 2 | 5 | 0 | 15 |
| b | 0 | 8 | 2 | 1 | 0 | 11 |
| c | 9 | 12 | 15 | 1 | 0 | 37 |
| d | 0 | 25 | 4 | 1 | 0 | 30 |
| Total | 9 | 53 | 23 | 8 | 0 | 93 |
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