Method for calculating angular insertion depth
| No. of Complete Turns | Angular Insertion Depth |
|---|---|
| <1 | 360 − θ |
| >1, <1.5 | 360 + θ |
| >1.5, <2 | 720 − θ |
| >2 | 720 + θ |
Note:—Angular insertion depth calculations: The angular insertion depth for apical electrodes coursing <1 complete turn in relation to the zero degree line is calculated by 360 − θ; for >1 turn but <540° (1.5 turns), insertion depth equals 360 + θ; for >1.5 turns but <2 turns, insertion depth equals 720 − θ. For >2 turns, insertion depth equals 720 + θ.