OBJECTIVES: The aim of our study was to investigate facet tropism and its impact on the development of lumbar spinal canal stenosis (LSCS) in patients with LSCS. MATERIALS AND METHODS Bilateral facet joint angles at the L3-4, L4-5, and L5-S1 levels were measured on axial plane in the lumbar magnetic resonance imaging (MRI) scans of 82 patients aged between 32 and 75 with LSCS, and 82 healthy individuals aged between 30 and 66 without LSCS, who were considered as the normal group. RESULTS Both groups in our study consisted of both males and females. The mean age was 51.4 for patients with LSCS and 44.7 for the healthy group, with no signifi cant difference (p>0.05). A total of 984 facet joint angles were measured, with 164 patients at three intervertebral disc levels each. The presence of facet tropism was found to be a signifi cant risk factor in the LSCS group compared to the healthy group, with an increased risk of 2.125 times at L3-4, 3.389 times at L4-5, and 2.496 times at L5-S1 (p<0.05). CONCLUSIONS In our study, we determined that facet joint tropism is statistically signifi cant in patients with LSCS compared to the control group (p<0.05). We believe that facet tropism plays a predisposing role as a contributing factor in the etiology of LSCS. KEY WORDS: lumbar spinal stenosis, facet tropism, magnetic resonance ımaging.

Health Sciences University Sultan Abdulhamid Han Training and Research Hospital Neurosurgery Service Üsküdar İstanbul Turkey

Výzkum vlivu charakteristik úhlu facetového kloubu na rozvoj lumbální spinální stenózy u pacientů se stenózou bederního kanálu

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