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Amount of lordosis to restore related to the pelvis incidence and the length of spinal construct
| PI | LLth |
Length of fusion |
||||
| L5-S1 | L4-S1 | L3-S1 | L2-S1 | L1-S1 | ||
| 40% of LLth | 67% of LLth | 85% of LLth | 97% of LLth | 100% of LLth | ||
| 40° | 55° | 22° | 37° | 47° | 53° | 55° |
| 50° | 60° | 24° | 40° | 51° | 58° | 60° |
| 60° | 65° | 26° | 44° | 55° | 63° | 65° |
| 70° | 70° | 28° | 47° | 59° | 68° | 70° |
PT: Pelvis tilt; LLth: Theoretical Lumbat lordosis.
