The aim of this study is to evaluate the correlation between the fat infiltration of the lumbar multifidus muscle and several parameters including the severity of the lumbar foraminal stenosis. The investigators will analyse lumbar MRI of patients previously included in a database of patients suffering from low back pain. Foraminal stenosis, muscle fat infiltration and other imaging lumbar parameters will be studied by 2D and 3D manuel segmentation, semi-automatic segmentation. Correlations between factors influencing the muscle fat infiltration will be studied by univariate and multivariate statistical analysis.
Study Type
OBSERVATIONAL
Enrollment
36
Cohort of patients suffering from low back pain and candidate to a spine surgery included in a database previously constituted
University Hospital of Nice
Nice, France
Percentage of muscle fat infiltration
Muscle fat infiltration (%) will be evaluated by 2D segmentation analysis of T2 weighted lumbar spine MRIs
Time frame: 1 year
Percentage of muscle fat infiltration
Muscle fat infiltration (%) will be evaluated by 3D segmentation analysis of T2 weighted lumbar spine MRIs
Time frame: 1 year
Lumbar foraminal stenosis
Lumbar foraminal stenosis will be evaluated by 2D segmentation analysis of T2 weighted lumbar spine MRIs and expressed as a nerve/foramen surface ratio, and by the Lee et al. Classification
Time frame: 1 year
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