Is Sacral Extension a Risk Factor for Early Proximal Junctional Kyphosis in Adult Spinal Deformity Surgery?
- Author:
Sebastian DECKER
1
;
Renaud LAFAGE
;
Christian KRETTEK
;
Robert HART
;
Christopher AMES
;
Justin S. SMITH
;
Douglas BURTON
;
Eric KLINEBERG
;
Shay BESS
;
Frank J. SCHWAB
;
Virginie LAFAGE
;
Author Information
- Publication Type:Clinical Study
- From:Asian Spine Journal 2020;14(2):212-219
- CountryRepublic of Korea
- Language:0
-
Abstract:
Results:Propensity matching led to two groups of 89 patients each. The UIV, pelvic incidence minus lumbar lordosis, sagittal vertical axis, pelvic tilt, age, and body mass index were similar in both groups (p >0.05). The incidence of PJK at postoperative one year was similar for SE (30.3%) and LF (22.5%) groups (p =0.207). The PJK angle was comparable (p =0.963) with a change of −8.2° (SE) and −8.3° (LF) from the preoperative measures (p =0.954). A higher rate of PJK after SE (p =0.026) was found only in the subgroup of patients with UIV levels between T9 and T12.
Conclusions:Instrumentation to the sacrum with or without iliac extension did not increase the overall risk of PJK. However, an increased risk for PJK was found after SE with UIV levels between T9 and T12.
