Abstract
The aim of this study was to compare pedicle dimensions in degenerative lumbar spinal stenosis (DLSS) with those in the general population. A retrospective computerized tomography (CT) study for lumbar vertebrae (L1 to L5) from two sample populations was used. The first included 165 participants with symptomatic DLSS (age range: 40-88 years, sex ratio: 80 M/85 F), and the second had 180 individuals from the general population (age range: 40-99 years, sex ratio: 90 M/90 F). Both males and females in the stenosis group manifested significantly greater pedicle width than the control group at all lumbar levels (P < 0.05). In addition, pedicle heights for stenosis females were remarkably smaller on L4 and L5 levels compared to their counterparts in the control group (P < 0.001). Males have larger pedicles than females for all lumbar levels (P < 0.001). Age and BMI did not demonstrate significant association with pedicle dimensions. Our outcomes indicate that individuals with DLSS have larger pedicle widths than the control group. More so, pedicle dimensions are gender-dependent but independent of age and BMI.
Highlights
Degenerative lumbar spinal stenosis (DLSS) is a common condition in the elderly population that is related to degeneration of the three-joint complex and ligaments [1, 2]
Symptomatic DLSS requires the combination of clinical presentation with radiological findings such as computerized tomography (CT) scan and magnetic resonance imaging (MRI) modalities [3, 4]
Mean Pedicle Height (PH) for stenosis females were considerably smaller on L4 and L5 levels compared to those for their counterparts in the control group
Summary
Degenerative lumbar spinal stenosis (DLSS) is a common condition in the elderly population that is related to degeneration of the three-joint complex and ligaments [1, 2]. Symptomatic DLSS requires the combination of clinical presentation with radiological findings such as computerized tomography (CT) scan and magnetic resonance imaging (MRI) modalities [3, 4]. Neurogenic claudication and radicular pain are the best described clinical pictures [3]. The surgical treatment of symptomatic DLSS often requires the use of instrumentation systems. The transpedicular screw fixation is stable and worthwhile as it provides three-dimensional fixation and is increasingly used worldwide [5, 6]. Information regarding pedicle morphometry is essential for using the pedicle screws
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