Influence de la morphologie sacro-pelvienne dans l'évolution du spondylolisthesis L5-S1 développemental
Developmental spondylolysis and spondylolisthesis is a well known and described sagittal spinal deformity in the literature.  However, there is still an ongoing debate on different aspects about this pathology including its etiology, pathophysiology, natural evolution and preferred treatment.  Numerous parameters and radiologic measures have been described in order to precisely quantify the abnormal relationship between L5 and S1.    So far none of these parameters have been proven reliable to predict the evolution in the spinal deformity.  Recently, two interesting studies showed that sacral morphology has a significant influence on spondylolisthesis.4,5  These findings have a direct implication to the evaluation and treatment of spondylolisthesis.  This also renews our scientific interest in the sagittal morphology in this condition.    The principal objective of this work is to evaluate the influence of the sacral form and orientation in patients with spondylolisthesis.  First of all, we constructed a large database of all patients with spondylolisthesis with a comparable control group.  After the radiographs are analyzed by computer to calculate all possible sagittal parameters described in the current literature.    This project has first of all allowed us to establish an ongoing database of all patients with spondylolysis and spondylolisthesis. So far this database is the largest in the literature and consists of more than 120 subjects.  This database allows us to analyze retrospectively and prospectively on the influence of sacropelvic sagittal morphology in subjects with spondylolisthesis.
Spondylolysis Spondylolisthesis Pelvis Morphology Pelvic incidence