1.Change in Line of Sight after Corrective Surgery of Adult Spinal Deformity Patients: A 2-Year Follow-up
Ken Jeffrey MAGCALAS ; Shin OE ; Yu YAMATO ; Tomohiko HASEGAWA ; Go YOSHIDA ; Tomohiro BANNO ; Hideyuki ARIMA ; Yuki MIHARA ; Hiroki USHIROZAKO ; Tomohiro YAMADA ; Koichiro IDE ; Yuh WATANABE ; Yukihiro MATSUYAMA
Asian Spine Journal 2023;17(2):272-284
Methods:
This retrospective study includes 295 corrective surgery patients with ASD. Subjects were divided into two groups after propensity age matching analysis: cranial malalignment (McGS <−8 or >13) and normal cranial alignment (−8≤ McGS ≤13). Lumbar lordosis (LL), pelvic tilt (PT), TK, cervical lordosis (CL), and sagittal vertical axis (SVA) were evaluated between the two groups.
Results:
SVA (95–56 mm) and PT (34°–25°) decreased and LL (19°–41°) increased 2 years after surgery (p <0.05), but McGS (−1.1° to −0.5°) and CL (21°–19°) did not change. Conversely, in the group with cranial malalignment, SVA (120–64 mm), PT (35°–26°), and LL (12°–41°) showed similar results to the normal cranial parameter group 2 years after surgery, but in contrast, McGS (−13° to −2°) and CL (24°–18°) improved significantly.
Conclusions
Severe ASD adversely affects to maintain horizontal gaze but can be improved by spinal corrective surgery.
Result Analysis
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