| Hand-Wrist SMI | Cervical Vertebral Stage | Percentage of Pubertal Growth Remaining |
| 1 - 2 | 1. Initiation | 85% - 100% |
| 3 - 4 | 2. Acceleration | 65% - 85% |
| 5 - 6 | 3. Transition | 25% - 65% |
| 7 - 8 | 4. Deceleration | 10% - 25% |
| 9 - 10 | 5. Maturation | 5% - 10% |
| 11 | 6. Completion | 0% |