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Introduction: Little has been done to quantify the differences in spinal range of motion (ROM) between adolescents with severe idiopathic scoliosis (prior to spinal instrumentation and fusion) and typically developing individuals. This data may be useful to the debate involving levels of spinal instrumentation and loss of ROM in adolescents with idiopathic scoliosis.
Methods: This is a prospective study consisting of 26 pre-operative patients (18 F, 8M, mean age 14.5±2.2y) with severe (curve over 50 degrees) adolescent idiopathic scoliosis (“Scoliosis Group”). Trunk ROM was assessed with a 3-Dimensional Motion Capture system (VICON; Oxford, UK). While standing the subjects were instructed to move their trunk maximally in all three planes (transverse, coronal and sagittal). The max values were statistically compared within the Scoliosis Group (side to side) and to a “Control Group” of age matched typically developing adolescents with significance set at p<0.05.
Results: Within the Scoliosis Group there was significantly greater rotation and side-bending to the left versus the right. When compared to the Control Group the Scoliosis Group had significantly less trunk rotation and side-bending to the right along with less forward bending flexibility (Table 1).
Conclusion: Adolescents with idiopathic scoliosis demonstrate trunk ROM asymmetry with limited motion in all three planes of motion compared to Controls.
Significance: These results could provide a good baseline comparison for spinal motion prior to surgical instrumentation and fusion and also activity limitations.
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