Zhou S, Sun Z, Li W, et al. - Among Chinese healthy population with different age groups, researchers examined the features of standing and sitting spinopelvic sagittal alignment. A total of 235 volunteers, aged 19 to 71 years, were included in this cross-sectional, prospective study. Participants in the study were divided into two groups: group A (age ≤ 40 years; n = 140) and group B (age > 40 years, n = 95). They performed student’s t test to compare the sagittal parameters including sagittal vertical axis (SVA), T1 pelvic angle (TPA), cervical lordosis (CL), thoracic kyphosis (TK), lumbar lordosis (LL) and pelvic tilt (PT) between standing and sitting positions of two groups. According to findings, the older volunteers displayed larger SVA, TPA, TK, CL and PT than young population in the standing position. When moving from standing to sitting, both groups showed similar changes, but the differences between the positions were smaller in the older population. These features should be considered when planning the surgical reconstruction of sagittal alignment in the standing and sitting positions of different age groups.