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Related Experiment Videos

Correlation between mobility restrictions and radiologic changes in ankylosing spondylitis

J V Viitanen1, M L Kokko, K Lehtinen

  • 1Department of Clinical Medicine, University of Tampere, Finland.

Spine
|February 15, 1995
PubMed
Summary

Range of motion (ROM) measurements correlate with radiologic progression in ankylosing spondylitis. These noninvasive ROM tests are reliable indicators of disease severity and progression in clinical practice.

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Area of Science:

  • Rheumatology
  • Orthopedics
  • Radiology

Background:

  • Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the axial skeleton.
  • Assessing disease progression and severity in AS often involves radiographic evaluation, which can be invasive and time-consuming.
  • Range of motion (ROM) limitations are a hallmark of AS, but their correlation with objective radiographic changes requires further elucidation.

Purpose of the Study:

  • To investigate the correlation between various ROM measurements and radiologic progression in the lumbar spine and sacroiliac joints of patients with ankylosing spondylitis.
  • To assess the reliability of these ROM measurements for clinical use in monitoring AS progression.

Main Methods:

  • 151 adult patients with AS underwent a 3-4 week inpatient rehabilitation program.

Related Experiment Videos

  • Ten different ROM values were measured using conventional and novel methods, including the Schober test, thoracolumbar rotation/flexion, cervical rotation, occiput-wall distance, chin-chest distance, chest expansion, finger-floor distance, vital capacity, and straight leg raise.
  • Lumbar spine and sacroiliac joints were radiographed, and changes were evaluated using a masked method. Reliability was assessed in 39 patients via repeated measurements.

    • Main Results:

    • A significant correlation was found between eight ROM measurements (Schober test, thoracolumbar rotation/flexion, cervical rotation, occiput-wall distance, chin-chest distance, chest expansion, finger-floor distance) and overall radiologic changes in both the lumbar spine and sacroiliac joints.
    • Straight leg raise did not correlate with radiologic changes, while vital capacity only correlated with sacroiliac joint changes.
    • The reliability of most ROM measurements was good, with the exception of interrater reliability for chest expansion.

    Conclusions:

    • Eight specific ROM measurements demonstrate a clear correlation with radiologic progression in the sacroiliac joints and lumbar spine in ankylosing spondylitis.
    • These ROM measurements serve as valuable, noninvasive tools for assessing disease progression and severity in daily clinical practice.
    • The established reliability of these ROM tests supports their routine use in managing patients with ankylosing spondylitis.