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Table 3 Mean pre-op, postop and FU values of “balanced” group patients

From: High grade isthmic spondylolisthesis; can reduction always re-align the unbalanced pelvis?

X-Ray index Pre-op Post-op FU
Listhesis percentage 79,6% (57–112) 41,2% (0–119) 52,9% (5–116)
Lumbar-sacral angle (LSA) −15,5° (da − 33 a + 17) − 3° (da − 35 a + 15) − 7,4° (da − 45 a + 15)
Lumbar lordosis (LL) 63,73° (56–72) 60,9° (51–72) 61,2° (55–71)
Sacral slope (SS) 50° (45–59) 48,9° (43–59) 47,5° (31–59)
Pelvic tilt (PT) 27° (17–36) 24,4° (11–40) 26,9° (14–39)
Pelvic incidence (PI) 74,5° (64–86) 74° (60–88) 74,9° (60–88)