What is the role of muscle strength testing in the evaluation of lumbosacral facet syndrome?

Updated: Nov 19, 2018
  • Author: Gerard A Malanga, MD; Chief Editor: Craig C Young, MD  more...
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Manual muscle testing is important to determine whether weakness is present and whether the distribution of weakness corresponds to a single root, multiple roots, or a peripheral nerve or plexus.

Typically, manual muscle testing results are normal in persons with Z-joint pathology; however, subtle weakness of the muscles of the pelvic girdle may contribute to pelvic tilt abnormalities. This subtle weakness may be appreciated with trunk, pelvic, and lower-extremity extension asymmetry.

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