The Standing and Sitting Sagittal Spinopelvic Alignment of Chinese Young and Elderly Population: Does Age Influence the Differences Between the Two Positions?

Overview

Journal Eur Spine J

Specialty Orthopedics

Date 2019 Oct 21

PMID 31630266

Citations 16

Authors

Siyu Zhou

Zhuoran Sun

Wei Li

Wei Wang

Tong Su

Chengbo Du

Weishi Li

Affiliations

Soon will be listed here.

Abstract

Purpose: To investigate the characteristics of standing and sitting spinopelvic sagittal alignment among Chinese healthy population with different age groups.

Method: This cross-sectional, prospective study included a total of 235 volunteers aged 19 to 71 years. Volunteers were divided into two groups: group A (age ≤ 40 years; n = 140) and group B (age > 40 years, n = 95). Student's t test was performed 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. Multiple regression was performed to explore the influence factors of differences between two positions.

Results: In the standing position, group B had larger SVA, TK, PT and TPA than group A. When moving from standing to sitting position, increased SVA and PT were found in both groups, accompanied by decreased LL and TK. However, despite similar change in SVA, group B presented with lesser changes in LL, PT and TPA than group A in sitting position. Age and gender independently influenced the difference in PT and LL.

Conclusion: In the standing position, the older volunteers showed larger SVA, TPA, TK, CL and PT than young population. Both groups showed similar changes when moving from standing to sitting, but the differences between the positions were smaller in older population. These characteristics in the standing and sitting positions of different age groups should be considered when planning surgical reconstruction of sagittal alignment. These slides can be retrieved under Electronic Supplementary Material.

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