Function and Scoliosis Surgery

Study Overview
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Brief Summary
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The purpose of the study is to examine the changes in function and performance biomechanics in patients undergoing spinal fusion corrective surgery for adolescent idiopathic scoliosis (AIS).

Detailed Description
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Methods will consist of movement studies, questionnaires, and chart review. The recruited subjects will be followed at the usual clinical schedule of pre-op, 6-week, 3 -, 6- and 12-month post-operative follow-up visits. After signing informed consent, age at time of surgery, height, weight, body composition, leg length will be recorded to be used during data processing. Chart review will further yield data on Cobb angle, Lenke Scoliosis classification, instrumentation used during surgery, and level of spinal fusion. All subjects will be asked to complete assessments of activity level (Marx Score, Tegner Activity Score), general health (EQ-5D), and a validated scoliosis survey (Scoliosis Research Study questionnaire SRS-22). Movement studies will consist of the Lower Quarter Y Balance Test (YBT-LQ), and Functional Movement Screen (FMS), and measures of forward flexion, right and left lateral bending, and right and left trunk rotation. These measures will be assessed preoperatively and at postoperative follow-up visits.

Official Title
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Functional Testing, and Biomechanics Before and After Scoliosis Surgery

Conditions
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Adolescent Idiopathic Scoliosis

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Clinical diagnosis of idiopathic scoliosis Patients identified to undergo spinal fusion surgery Treated at Duke University Medical Center Exclusion Criteria: Neuromuscular or congenital scoliosis

Ages Eligible for Study
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Minimum Age: 12 Years
Maximum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Lower Quarter Y-Balance Test (YBT-LQ) | The YBT-LQ is a test of dynamic balance in unilateral stance that has been deemed to be reliable and valid. The YBT-LQ consists of each patient standing on one leg and reaching as far as they can with their non-stance leg in the anterior, posteromedial and posterolateral direction while standing on the other foot on a centralized stance platform. | Preoperatively; 6wks, 3mos, 6mos, and 12mos Postoperatively | 
| Change in Functional Movement Screen (FMS) | The FMS is a screening tool used to identify limitations or asymmetries in movement patterns by executing seven motions. Activities include a deep squat, lunges, hurdle steps, a push-up, straight-leg raises, shoulder mobility assessments, and rotary stability assessments. | Preoperatively; 6wks, 3mos, 6mos, and 12mos Postoperatively | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Tegner Activity Scale |  | Preoperatively; 6wks, 3mos, 6mos, and 12mos Postoperatively | 
| Change in Marx Activity Scale |  | Preoperatively; 6wks, 3mos, 6mos, and 12mos Postoperatively | 
| Change in EQ-5D |  | Preoperatively; 6wks, 3mos, 6mos, and 12mos Postoperatively | 
| Change in SRS-22 |  | Preoperatively; 6wks, 3mos, 6mos, and 12mos Postoperatively | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Adolescent Idiopathic Scoliosis, Functional Movement Screen, Y Balance Test