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Related Experiment Video

Updated: May 2, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

Published on: December 11, 2013

Gender differences in spinal mobility during postural changes: a detailed analysis using upright CT.

Ryo Mizukoshi^1,2, Mitsuru Yagi^3,4, Yoshitake Yamada⁵

¹Department of Orthopaedic Surgery, Keio University School of Medicine, 35 Shinanomachi Shinjyuku, Tokyo, Japan.

Scientific Reports

|April 21, 2024

Summary

Gender differences in lumbar spinal alignment are significant. Females exhibit greater pelvic and sacral mobility, impacting spinal biomechanics and potentially influencing spinal pathologies.

Keywords:

Gender differences Lumbar alignment Postural changes Spinal mobility Upright CT

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Last Updated: May 2, 2026

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Area of Science:

Orthopedics
Radiology
Biomechanics

Background:

Lumbar spinal alignment is critical for spine biomechanics.
Limited research exists on gender-specific differences in lumbar alignment using CT scans.

Purpose of the Study:

To evaluate and compare lumbar spinal alignment between standing and sitting CT scans in healthy individuals.
To identify gender-specific differences in lumbar alignment parameters.

Main Methods:

24 young and 25 elderly males and females underwent standing and sitting CT scans.
Measured parameters included lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), lordotic angle (LA), foraminal height (FH), and bony boundary area (BBA).

Main Results:

Females showed significantly larger changes in SS and PT from standing to sitting.
Elderly females had a larger decrease in L4-S lordotic angle compared to males.
Females consistently exhibited larger FH and BBA values, especially in lower lumbar segments and in the elderly.

Conclusions:

Distinct gender-related variations in lumbar alignment and flexibility exist.
Females display greater pelvic and sacral mobility.
Considering gender-specific characteristics is crucial for assessing spinal alignment and understanding spinal pathologies.