Lumbar stenosis (LSS) is the most frequent degenerative lumbar disease and is the most frequent indication for spinal surgery. When non-invasive treatments fail, decompression surgery is the gold standard therapy for the majority of patients and generally improves symptoms. However, few studies have investigated the improvement in posture (radiological parameters) after surgery. In lumbar stenosis, patients may present a forward leaning posture (to relieve pain), which is responsible for sagittal imbalance. The aim of this prospective study was to evaluate the repercussions of decompression surgery on sagittal balance and to compare these with aux clinical results. investigators included patients operated on for isolated lumbar canal stenosis.
Study Type
OBSERVATIONAL
Enrollment
72
Chu de Dijon
Dijon, France
Vertical sagittal axis
Evaluation of sagittal parameters
Time frame: 12 months
radiographic evaluation with EOS
Use of the EOS system and 3D SterEOS software o carry out very precise measurements and 3D reconstructions by bone modeling which give access to new parameters
Time frame: 12 months
Functional Interest
Stenosis self-questionnaire (Zurich Claudication Questionnaire)
Time frame: 12 months
Sagittal parameters
PI (pelvic incidence) in degrees,
Time frame: 12 months
Sagittal parameters
SS (sacral slope) in degrees
Time frame: 12 months
Sagittal parameters
PT (pelvic tilt) in degrees
Time frame: 12 months
Sagittal parameters
LL (lumbar lordosis) in degrees
Time frame: 12 months
Sagittal parameters
TK in degrees
Time frame: 12 months
Sagittal parameters
TPA (T1 Pelvic Angle) in degrees
Time frame: 12 months
Sagittal parameters
C7 Barrey's ratio as a percentage
Time frame: 12 months
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