Accession Number:

AD1019642

Title:

Lumbar Spine Musculoskeletal Physiology and Biomechanics During Simulated Military Operations

Descriptive Note:

Technical Report,01 Jun 2015,31 May 2016

Corporate Author:

University of California, San Diego La Jolla United States

Report Date:

2016-06-01

Pagination or Media Count:

24.0

Abstract:

This study evaluated the relationship between 3D geometry of the lumbar spine, under different loading conditions and positions, and the pathophysiology of the intervertebral disc and lumbar trunk muscles. 43 Marines were scanned using upright MRI in operationally relevant loading conditions with minimum load, 39 of these Marines were also scanned in a high-resolution MRI scanner to muscle and disc pathophysiological assessment. Significant decreases in lumbar lordosis were found through all levels except L1-L2 when sitting. When prone on elbows, the only increase in lumbar lordosis was found at L5-S1. A caudal increase in fat fraction of the multifidus was observed, with no significant increase in the erector spine. No significant correlations were found between disc injury and muscle pathophysiology.

Subject Categories:

  • Anatomy and Physiology
  • Biology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE