Mayo Clinic
The purpose of this study is to measure functional activity and stability in spinal deformity patients utilizing motion analysis testing and accelerometers.
Inclusion Criteria: * Diagnosis of degenerative thoracolumbar deformity * Deformity correction surgery scheduled with either Dr. Elder or Dr. Fogelson, minimum 4-level fusion with fixation to the pelvis. Exclusion Criteria: ° Unable to return to Mayo Clinic for follow-up evaluation
Monitors placed on the waist, thigh, and bilateral ankles. Accelerometry will measure patients' physical activities in the free-living environment for 4 consecutive days. The patients will wear the monitor during waking hours and remove it during sleeping, showering, and swimming time.