This study is aimed to demonstrate the standing and sitting spino-pelvic sagittal alignment in Chinese population, then to explore the influence of spinal fusion on the changes when moving from standing to sitting positon.
Study Type
OBSERVATIONAL
Enrollment
216
Group 1 underwent whole spine X-ray in standing and sitting positions.
Peking University Third Hospital
Beijing, Beijing Municipality, China
Group 2 The sagittal spinal parameters in degrees
The parameters included TPA (T1 pelvic angle,the angle between the line from the axis of the femoral head to the center of T1 and the line from the axis of the femoral head to the midpoint of the S1 endplate), lumbar lordosis (LL,the angle between the upper endplate of L1 and S1), thoracic kyphosis (TK,The angle between the upper endplate of T4 and the lower endplate of T12), pelvic incidence (PI,The angle between the line perpendicular to the midpoint of the sacral plate and the line connecting this to the midpoint of the hip axis), pelvic tilt (PT,The angle between the line from the middle of the sacral plate to the middle of the hip axis and the vertical line), sacral slope (SS,The angle between the sacral endplate and the horizontal line)
Time frame: 3 months after surgery
Group 1 The sagittal spinal parameters in degrees
The parameters included TPA (T1 pelvic angle,the angle between the line from the axis of the femoral head to the center of T1 and the line from the axis of the femoral head to the midpoint of the S1 endplate), lumbar lordosis (LL,the angle between the upper endplate of L1 and S1), thoracic kyphosis (TK,The angle between the upper endplate of T4 and the lower endplate of T12), pelvic incidence (PI,The angle between the line perpendicular to the midpoint of the sacral plate and the line connecting this to the midpoint of the hip axis), pelvic tilt (PT,The angle between the line from the middle of the sacral plate to the middle of the hip axis and the vertical line), sacral slope (SS,The angle between the sacral endplate and the horizontal line)
Time frame: 6 months after study started
Group 1 The sagittal spinal parameters in millimeter
SVA (sagittal vertical axis, The offset between the center of C7 and the plumb line drawn from posterosuperior corner of S1)
Time frame: 6 months after study started
Group 2 Disability assessed by the Oswestry Disability Index (ODI)
The Oswestry Disability Index (ODI) (0-100) is used to assess disability.Higher scores mean a worse outcome.
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Time frame: 3 months after surgery
Group 2 Back pain assessed by the VAS
The Visual Analog Scale (0-10) is used to evaluate back pain.Higher scores mean a worse outcome
Time frame: 3 months after surgery
Group 2 Leg pain assessed by the VAS
The Visual Analog Scale (0-10) is used to evaluate leg pain.Higher scores mean a worse outcome.
Time frame: 3 months after surgery