Comparing Two Instrumentation Systems for the Treatment of Adolescent Scoliosis

Comparing the Moss Miami and Universal Spinal Instrumentation Systems for the Treatment of Adolescent Idiopathic Scoliosis

Idiopathic scoliosis affects 2-5% of adolescents. This study will compare the quality of life, functional outcome, cosmetic result, and the correction of spinal deformity of two instrumentation systems for the treatment of adolescent idiopathic scoliosis.

Inclusion Criteria:

• Age 8-18 years
• Diagnosis of idiopathic scoliosis requiring posterior instrumentation and fusion(including those also requiring anterior release with or without anterior instrumentation) who could receive either the USS or the Moss Miami system
• Patients with scoliosis and an incidental finding of conus < L1-2 disc level, provided they have no symptoms or signs
• Patients with scoliosis and an incidental finding of a small syrinx (provided the syrinx is non-progressive and does not require neurosurgical treatment)
• Patients with non-progressive spondylolysis

Exclusion Criteria:

• Spinal cord abnormalities with any neurologic symptoms or signs
• Spinal cord lesions requiring neurosurgical interventions, such as hydromyelia requiring Arnold Chiari decompression
• Primary muscle diseases, such as muscular dystrophy
• Neurologic diseases (e.g. Charcot-Marie Tooth, Guillain-Barre syndrome, cerebral palsy, or spina bifida, etc.)
• Primary abnormalities of bones(e.g. osteogenesis imperfecta)
• Congenital scoliosis