Study: NCT02610855

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Spinal Fusion Surgery
Description: Participants with severe scoliosis curves requiring spinal fusion surgery.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Bracing
Description: Participants with scoliosis curves that require brace treatment for at least the next year. Braces include monitors to record hours of brace wear, as is current standard of care.

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Tri-axial Accelerometers
Description: Four monitors are place on the participant (waist, thigh, both ankles), attached with straps. Periods of static and dynamic activity are measured based on accelerations in three orthogonal directions for 4 day's time while participating in regular daily activities.

Intervention type: DEVICE
Group type: OTHER
Intervention: Tri-axial Accelerometers
Description: Four monitors are place on the participant (waist, thigh, both ankles), attached with straps. Periods of static and dynamic activity are measured based on accelerations in three orthogonal directions for 4 day's time while participating in regular daily activities.

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Tri-axial Accelerometers
Description: Four monitors are place on the participant (waist, thigh, both ankles), attached with straps. Periods of static and dynamic activity are measured based on accelerations in three orthogonal directions for 4 day's time while participating in regular daily activities.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Shear Wave Elastography (SWUE)
Description: SWUE is an ultrasound technique for noninvasively evaluating the mechanical properties (stiffness) of skeletal muscle tissue. A commercial ultrasound scanner (Aixplorer from Supersonic Imagine, France) with 2D real time SWUE will be used. The Aixplorer uses ultrasonic push beams to produce shear waves in tissue. The shear wave propagation speed is inherently related to tissue mechanical properties and is used to create a quantitative 2D elastogram of the tissue.

Intervention type: OTHER
Group type: OTHER
Intervention: Shear Wave Elastography (SWUE)
Description: SWUE is an ultrasound technique for noninvasively evaluating the mechanical properties (stiffness) of skeletal muscle tissue. A commercial ultrasound scanner (Aixplorer from Supersonic Imagine, France) with 2D real time SWUE will be used. The Aixplorer uses ultrasonic push beams to produce shear waves in tissue. The shear wave propagation speed is inherently related to tissue mechanical properties and is used to create a quantitative 2D elastogram of the tissue.

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Shear Wave Elastography (SWUE)
Description: SWUE is an ultrasound technique for noninvasively evaluating the mechanical properties (stiffness) of skeletal muscle tissue. A commercial ultrasound scanner (Aixplorer from Supersonic Imagine, France) with 2D real time SWUE will be used. The Aixplorer uses ultrasonic push beams to produce shear waves in tissue. The shear wave propagation speed is inherently related to tissue mechanical properties and is used to create a quantitative 2D elastogram of the tissue.