Change in Line of Sight after Corrective Surgery of Adult Spinal Deformity Patients: A 2-Year Follow-up
- Author:
Ken Jeffrey MAGCALAS
1
;
Shin OE
;
Yu YAMATO
;
Tomohiko HASEGAWA
;
Go YOSHIDA
;
Tomohiro BANNO
;
Hideyuki ARIMA
;
Yuki MIHARA
;
Hiroki USHIROZAKO
;
Tomohiro YAMADA
;
Koichiro IDE
;
Yuh WATANABE
;
Yukihiro MATSUYAMA
Author Information
- Publication Type:Clinical Study
- From:Asian Spine Journal 2023;17(2):272-284
- CountryRepublic of Korea
- Language:English
-
Abstract:
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.
