Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
This study is to evaluate the correlation between muscle atrophy (MA), sagittal alignment, and stenosis degree in patients with lumbar spinal Stenosis (LSS). From existing radiological images, specific radiographic parameters will be extracted. General Information (Age, sex, levels of stenosis, duration of symptoms) will be extracted from patient files.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| radiographic data collection | Other | From existing radiological Images (upright standing X-ray and supine MRI of the lumbar spine), specific radiographic parameters will be extracted |
| Measure | Description | Time Frame |
|---|---|---|
| Severity of muscle atrophy (MA) from supine Magnetic Resonance Imaging (MRI) of lumbar spine | Muscle atrophy stage will be observed using Goutallier classification
| single time-point at baseline |
| Pelvic incidence (PI): Pelvic alignment from standard upright standing sagittal plane X-ray of lumbar spine with clear visibility of pelvis sacrum and femoral heads | Pelvic incidence (PI): The angle between the line perpendicular to the sacral endplate at its midpoint and a line connecting this point to the axis of the femoral head. | single time-point at baseline |
| Severity of stenosis from supine MRI of lumbar spine | Stenosis grade will be observed using Schizas classification (Schizas et al., 2010)
| single time-point at baseline |
| Pelvic tilt (PT): Pelvic alignment from standard upright standing sagittal plane X-ray of lumbar spine with clear visibility of pelvis sacrum and femoral heads | Pelvic tilt (PT): The angle formed by a vertical line through the center of the femoral heads and the line from the center of the femoral axis and the midpoint of the sacral end plate. | single time-point at baseline |
Not provided
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
All patients who visited Orthopaedics and Traumatology outpatient clinic at University Hospital Basel for clinical and radiological consultation regarding their lumbar spine between 01.01.2018 and 31.12.2019.
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Annegret Muendermann, Prof. Dr. med. | Orthopaedics and Traumatology, University Hospital Basel | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Orthopaedics and Traumatology, University Hospital Basel | Basel | 4031 | Switzerland |
Not provided
Not provided
Not provided
Not provided
| Sacral slope (SS): Pelvic alignment from standard upright standing sagittal plane X-ray of lumbar spine with clear visibility of pelvis sacrum and femoral heads | Sacral slope (SS): The angle formed between the horizontal and the sacral end plate. | single time-point at baseline |
| Lumbar lordosis (LL): Pelvic alignment from standard upright standing sagittal plane X-ray of lumbar spine with clear visibility of pelvis sacrum and femoral heads | Lumbar lordosis (LL): The sagittal angle formed between the superior end plate of L1 and the sacral end plate | single time-point at baseline |
| ID | Term |
|---|---|
| D013130 | Spinal Stenosis |
| ID | Term |
|---|---|
| D013122 | Spinal Diseases |
| D001847 | Bone Diseases |
| D009140 | Musculoskeletal Diseases |
Not provided
Not provided