TY - JOUR
T1 - Lumbosacral stress and age may contribute to increased pelvic incidence
T2 - an analysis of 1625 adults
AU - Bao, Hongda
AU - Liabaud, Barthelemy
AU - Varghese, Jeffrey
AU - Lafage, Renaud
AU - Diebo, Bassel G.
AU - Jalai, Cyrus
AU - Ramchandran, Subaraman
AU - Poorman, Gregory
AU - Errico, Thomas
AU - Zhu, Feng
AU - Protopsaltis, Themistocles
AU - Passias, Peter
AU - Buckland, Aaron
AU - Schwab, Frank
AU - Lafage, Virginie
N1 - Publisher Copyright:
© 2017, Springer-Verlag GmbH Germany.
PY - 2018/2
Y1 - 2018/2
N2 - Purpose: While there is a consensus that pelvic incidence (PI) remains constant after skeletal maturity, recent reports argue that PI increases after 60 years. This study aims to investigate whether PI increases with age and to determine potential associated factors. Methods: 1510 patients with various spinal degenerative and deformity pathologies were enrolled, along with an additional 115 asymptomatic volunteers. Subjects were divided into six age subgroups with 10-year intervals. Results: PI averaged 54.1° in all patients. PI was significantly higher in the 45–54-year age group than 35–44-year age group (55.8° vs. 49.7°). There were significant PI differences between genders after age 45. Linear regression revealed age, gender and malalignment as associated factors for increased PI with R2 of 0.22 (p < 0.001). Conclusions: PI is higher in female patients and in older patients, especially those over 45 years old. Spinal malalignment also may have a role in increased PI due to increased L5–S1 bending moment.
AB - Purpose: While there is a consensus that pelvic incidence (PI) remains constant after skeletal maturity, recent reports argue that PI increases after 60 years. This study aims to investigate whether PI increases with age and to determine potential associated factors. Methods: 1510 patients with various spinal degenerative and deformity pathologies were enrolled, along with an additional 115 asymptomatic volunteers. Subjects were divided into six age subgroups with 10-year intervals. Results: PI averaged 54.1° in all patients. PI was significantly higher in the 45–54-year age group than 35–44-year age group (55.8° vs. 49.7°). There were significant PI differences between genders after age 45. Linear regression revealed age, gender and malalignment as associated factors for increased PI with R2 of 0.22 (p < 0.001). Conclusions: PI is higher in female patients and in older patients, especially those over 45 years old. Spinal malalignment also may have a role in increased PI due to increased L5–S1 bending moment.
KW - Adult spinal deformity
KW - Pelvic incidence
KW - Sagittal alignment
UR - https://www.scopus.com/pages/publications/85031420306
U2 - 10.1007/s00586-017-5324-z
DO - 10.1007/s00586-017-5324-z
M3 - Article
C2 - 29027007
AN - SCOPUS:85031420306
SN - 0940-6719
VL - 27
SP - 482
EP - 488
JO - European Spine Journal
JF - European Spine Journal
IS - 2
ER -