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Table 6 Mean pre-op, post-op and final FU values in patients treated without interbody support

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

X-Ray index Pre-op Post-op FU
Listhesis percentage 83,2% (63–141) 56,6% (4–149) 75,3% (30–154)
Lumbar-sacral angle (LSA) − 22° (−47 to + 17) − 13° (− 58 to + 15) −19,5° (− 47 to + 15)
Lumbar lordosis (LL) 56,2° (29–71) 55,1° (43–68) 54,2° (38–71)
Sacral slope (SS) 44,2° (26–59) 45° (37–56) 43,9° (22–56)
Pelvic tilt (PT) 28,6° (17–41) 28,1° (13–45) 31,2° (16–49)
Pelvic incidence (PI) 72,9° (49–88) 73,3° (58–85) 73,6° (41–89)