Study of Sagittal Pelvic Statics in the Sitting Position in Children With Cerebral Palsy

Condition(s) studied

Investigational drug(s) / intervention(s)

spine and pelvis radiography: X-ray of the spine and pelvis from the front and the side will be performed under the standardized conditions that we put in place: in a sitting position on a specific modular chair.

Study summary

Cerebral palsy is the leading cause of motor disability in children. Children with little or no walking (GMFCS III, IV and V) represent 43% of children with cerebral palsy, the majority of whom present pelvic and spinal deformities in the frontal and sagittal planes. However, sagittal pelvic spinal statics have been little studied, especially in the sitting position, which is the functional position of these children.

Moreover, there are currently no recommendations on how to perform follow-up radiographs of the spine in children who do not walk much.

A better understanding of pelvic and sagittal spinal statics would help prevent deformities and their complications.

Standardizing the method of performing pelvic-spinal radiographs in the sitting position will make monitoring of spinal statics more reliable.

Eligibility

Primary outcome measure(s)

• Evolution of the sagittal spinal statics in the sitting position — At baseline
  measurement of pelvic incidence (normal values between 35 and 85 degrees)
• Evolution of the sagittal spinal statics in the sitting position — At baseline
  sacral slope (angle of inclination of the sacral plateau in profile to the horizontal (degrees))
• Evolution of the sagittal spinal statics in the sitting position — At baseline
  pelvic version (angle between the vertical and the line joining the center of the femoral heads with the middle of the sacral plateau (in degrees))
• Evolution of the sagittal spinal statics in the sitting position — At baseline
  lordoses cervicales (in degrees)
• Evolution of the sagittal spinal statics in the sitting position — At baseline
  lumbar lordosis (in degrees)
• Evolution of the sagittal spinal statics in the sitting position — At baseline
  thoracic kyphosis (in degrees)
• Evolution of the sagittal spinal statics in the sitting position — At baseline
  Cobb angle (if scoliosis) (curvature greater than 10 degrees : definition of scoliosis; between 10 and 15 degree: benign scoliosis; between 15 and 35 degrees: moderate scoliosis; curvature greater than 35 degrees: significant scoliosis.)

Trial sites (1)

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