The Role of the Features of Facet Joint Angle in the Development of Isthmic Spondylolisthesis in Young Male Patients with L5-S1 Isthmic Spondylolisthesis.

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The Role of the Features of Facet Joint Angle in the Development of Isthmic Spondylolisthesis in Young Male Patients with L5-S1 Isthmic Spondylolisthesis.

World Neurosurg. 2017 May 23;:

Authors: Eroglu A

Abstract
OBJECTIVE: To investigate the facet tropism and its role in the development of lumbar isthmic spondylolisthesis (IS) in young male adults.
MATERIAL AND METHOD: From March 2013 to May 2016, bilateral facet joint angles were measured axially at the level of L3-4, L4-5 and L5-S1 in the lumbar computerized tomography (CT) of the 97 individuals (46 patients with IS and 51 control) aged between 20 and 29. Classification was as follows: If the difference between the two corresponding facet angles is <6°, no tropism; if it is 6°-12°, moderate tropism; and if it is >12°, severe tropism.
RESULTS: 276 and 306 facet angles from 46 patients with IS and from 51 controls respectively, were measured (582 total). For the patients with IS, there was no tropism in 43.5% (n=20), there was moderate tropism in 50% (n=23) and severe tropism in 6.5% (n=3) at the level of L3-4. For the level of L4-5, there was no tropism in 28.3% (n=13), there was moderate tropism in 60.9% (n=28) and severe tropism in 10.9% (n=5). For the level of L5-S1, there was no tropism in 32.6% (n=15), there was moderate tropism in 39.1% (n=18) and severe tropism in 28.3% (n=13). For the control group, there was no tropism in 86.3% (n=44), there was moderate tropism in 13.7% (n=7) and no severe tropism at the level of L3-4. For the level of L4-5, there was no tropism in 80.4% (n=41), there was moderate tropism in 17.6% (n=9) and severe tropism in 1.9% (n=1). For the level of L5-S1, there was no tropism in 68.6% (n=35), there was moderate tropism in 29.4% (n=15) and severe tropism in %1.9 (n=1).
DISCUSSION: Facet angle tropism is seen in a high proportion of patients with IS and seems to be a predisposing factor in the etiology of IS.

PMID: 28549642 [PubMed - as supplied by publisher]

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