2018, Number 1
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ABSTRACTIntroduction: Lumbar stenosis is one of the main causes of low back pain worldwide. It manifests initially with lumbalgia, progresses with radiculopathy, to a sensory and muscular condition of the lower limbs. The fundamental symptom is the spinal pain of mechanical characteristics. The anamnesis identifies the cases of neurogenic claudication typical of the Lumbar stenosis and the physical examination detects the signs of radicular affection. Stenosis is defined statistically and is measured in areas where the bone channel is narrowest in the computed tomography or magnetic resonance imaging. Radiographic spinal stenosis assesses a spinal canal ‹ 10 mm in diameter and is only relevant if there is neurogenic claudication or pain irradiated in a concordant dermatomal path. Lumbar stenosis presents factors that can be measured, and values that are not within parameters established in these reference values contribute to directly affect or predict a risk factor to develop Lumbar stenosis. Objective: Apply diagnostic tests by image to each pathology of the lumbar spine, to avoid performing dangerous and ineffective techniques for the diagnosis or conservative or surgical management of a specific pathology in the lumbar spine. Conclusion: Radiological measurements in the presurgical evaluation of Lumbar stenosis based initially with simple radiographs, then computed tomography and later magnetic resonance imaging and sarachradiculography; they will be of importance to determine the therapeutic behavior in the pathology of Lumbar stenosis, as well as to predict the evolution of the disease and the expected results in case of opting for surgical treatment.
Kanno H, Ozawa H, Koizumi Y, Morozumi N, Aizawa T, Kusakabe T, et al. Dynamic change of dural sac cross-sectional area in axial loaded magnetic resonance imaging correlates with the severity of clinical symptoms in patients with lumbar spinal canal stenosis. Spine (Phila Pa 1976). 2012; 37 (3): 207-213.