Lumbar Spine Musculoskeletal Physiology and Biomechanics During Simulated Military Operations

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. 42 Marines were scanned using upright MRI in a normal standing position, and in simulated operational conditions wearing PPE (n=30; weight=11.4kg), or scanned wearing load (22kg, 33kg, 45kg) distributed 20/80 or 50/50 anterior/posterior (n=12). 28 Marines were scanned in a highresolution 3T MRI scanner to quantify muscle quality and IVD degeneration. Lumbar lordosis significantly decreases at all levels except L1L2 when sitting. Even anterior/posterior distribution of load maintains whole lumbar lordosis as load increases. Subjects with IVD degeneration at L4L5 had muscle volume differences.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2015
Accession Number
ADA622194

Entities

People

  • Ana E Rodriguez-Soto
  • David B Berry
  • Karen Kelly
  • Samuel R Ward
  • Sara Gombatto

Organizations

  • University of California, San Diego

Tags

DTIC Thesaurus Topics

  • Active Duty
  • Anxiety Disorders
  • Biomechanics
  • Bone Diseases
  • Data Analysis
  • Medical Personnel
  • Military Operations
  • Musculoskeletal Physiology
  • Pain
  • Rehabilitation
  • Skeletal Muscle
  • Spine
  • Students
  • Three Dimensional
  • Traumatic Stress Disorder
  • Warfare
  • Wounds And Injuries

Fields of Study

  • Medicine

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Electrical Engineering
  • Neurotrauma and Rehabilitation Medicine.