What is the most likely diagnosis? - ProProfs Discuss
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What is the most likely diagnosis?
A 20-year old male presents with low back pain following a fall onto a concrete floor. The patient gives a history of episodic aching of the lumbar region prior to the fall. Examination of the patient in the prone position reveals a deep sulcus on the left, a posterior/inferior ILA on the right when compared to the opposite side, and a lumbosacral junction that springs freely upon compression.  



A. A forward sacral torsion on a right oblique axis
B. A forward sacral torsion on a left oblique axis
C. A backward sacral torsion on a left oblique axis
D. A left unilateral sacral flexion
E. Bilateral sacral extension

This question is part of Sacral Q-bank
Asked by Babydoctor, Last updated: Oct 04, 2018

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babydoctor

Babydoctor

Answered on Apr 28, 2018

A forward sacral torsion on a right oblique axis

In a patient with a deep left sulcus and a negative lumbosacral spring test, the left portion of the sacrum has moved anterior. Since the above patient has posterior/inferior ILA on the right this indicates that this portion of the sacrum has moved posteriorly. A forward sacral torsion on a right oblique axis (i.e. a right rotation on a right oblique axis) is the only answer that would be consistent with the above findings.
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