Lawrence G Lenke

STUDY DESIGN: This was a prospective study of two cohort groups of patients (one group receiving anterior instrumentation and the other posterior instrumentation) receiving treatment for thoracic idiopathic scoliosis.

OBJECTIVE: To present the 2-year postoperative results of a prospective multicenter study comparing the use of anterior instrumentation with that of posterior multisegmented hook instrumentation for the correction of adolescent thoracic idiopathic scoliosis.

SUMMARY OF ...

STUDY DESIGN: A retrospective matched cohort study.

OBJECTIVE: To comprehensively compare the 2-year postoperative results of posterior correction and fusion with segmental pedicle screw instrumentation versus those with hook constructs in adolescent idiopathic scoliosis (AIS) treated at a single institution.

SUMMARY OF BACKGROUND DATA: Despite the reports of satisfactory correction and maintenance of scoliotic curves by pedicle screw instrumentation compared to hook constructs, few ...

STUDY DESIGN: Retrospective radiographic review.

OBJECTIVES: To analyze how the Lenke classification of adolescent idiopathic scoliosis provides a template of specific curve patterns that may be appropriate to perform selective fusion of the spine.

METHODS: A new triad classification system of adolescent idiopathic scoliosis has been developed. It consists of a curve type, a lumbar spine modifier (A, B, C), and a sagittal thoracic modifier (-, N, +). A selective fusion is termed when ...

STUDY DESIGN: Multicenter analysis of 2 groups of patients surgically treated for Lenke 5C adolescent idiopathic scoliosis (AIS).

OBJECTIVE: Compare patients with Lenke 5C scoliosis surgically treated with anterior spinal fusion with dual rod instrumentation and anterior column support with patients surgically treated with posterior release and pedicle screw instrumentation.

SUMMARY OF BACKGROUND DATA: Treatment of single, structural, lumbar, and thoracolumbar curves in patients with AIS ...

STUDY DESIGN: The results of correction for adolescent idiopathic scoliosis (AIS) were compared using apical sublaminar wires versus pedicle screws.

OBJECTIVE: To compare comprehensively the 2-year minimum postoperative results of posterior correction and spinal fusion using translational correction through either hybrid hook/sublaminar wire/pedicle screw constructs versus in situ rod-contouring correction with pedicle screw constructs in the treatment of AIS at 2 institutions.

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STUDY DESIGN: Analysis of radiographic outcomes following surgical correction of scoliosis.

OBJECTIVES: To compare the curve correction and derotation following anterior spinal fusion (ASF) versus posterior spinal fusion (PSF) with thoracic pedicle screws.

SUMMARY OF BACKGROUND DATA: The benefits of ASF in adolescent idiopathic scoliosis include saving distal fusion levels and historically greater correction and derotation compared with PSF. However, comparative studies between ASF and ...

STUDY DESIGN: Retrospective clinical, radiographic, and patient outcome review of surgically treated adolescent idiopathic scoliosis.

OBJECTIVES: To correlate radiographic and clinical features of shoulder balance and the proximal thoracic curve with patient satisfaction outcomes at a minimum 2-year follow-up.

SUMMARY OF BACKGROUND DATA: Traditionally, radiographic features of a structural proximal thoracic curve have been T1 tilt, proximal thoracic Cobb angle, and proximal thoracic ...

STUDY DESIGN: A prospective evaluation of pulmonary function in patients with adolescent idiopathic scoliosis undergoing surgical correction.

OBJECTIVES: 1) To evaluate prospectively, at regular intervals, the changes in pulmonary function after surgical arthrodesis of primary thoracic and double primary thoracic-lumbar (double major) types of adolescent idiopathic scoliosis in a homogeneous population; 2) to compare the changes in pulmonary function after surgical correction relative to ...

STUDY DESIGN: A retrospective matched cohort study.

OBJECTIVE: To comprehensively compare the 2-year postoperative results of posterior correction and fusion with segmental pedicle screw instrumentation versus with hybrid (proximal hooks and distal pedicle screws) constructs in adolescent idiopathic scoliosis (AIS) treated at a single institution.

SUMMARY OF BACKGROUND DATA: Despite the reports of satisfactory correction and maintenance of scoliotic curves by pedicle screw ...

STUDY DESIGN: Retrospective study of large-magnitude thoracic curves (> or =90 degrees ) treated with pedicle screw constructs.

OBJECTIVE: To evaluate the results of pedicle screw constructs for thoracic curves > or = 90 degrees in terms of sagittal and coronal correction/efficacy, as well as accuracy and safety of thoracic pedicle screw placement.

SUMMARY OF BACKGROUND DATA: Thoracic pedicle screw constructs continue to become increasingly more common; however, the debate continues ...

STUDY DESIGN: Retrospective clinical, radiographic, and patient outcome review of surgically treated adolescent idiopathic scoliosis.

OBJECTIVES: To evaluate the spontaneous correction of the noninstrumented proximal thoracic (PT) curve after isolated correction of the main thoracic (MT) curve by either an anterior (ASF) or posterior (PSF) instrumentation and fusion.

SUMMARY OF BACKGROUND DATA: There are no studies comparing the structural PT curve response after anterior versus ...

STUDY DESIGN: A prospective radiographic evaluation of 20 consecutive patients with primary lumbar or thoracolumbar adolescent idiopathic scoliosis who were treated with anterior convex compressive single solid-rod spinal instrumentation and structural titanium mesh (Harms) cages.

OBJECTIVES: To evaluate a lordosis-preserving anterior single solid-rod instrumented fusion technique for these specific adolescent idiopathic curves.

SUMMARY OF BACKGROUND DATA: Maintaining instrumented ...

STUDY DESIGN: Prospective study.

OBJECTIVES: To prospectively evaluate sequential pulmonary function tests (PFTs) at a minimum 2-year follow-up after an open anterior spinal fusion (ASF) with instrumentation for thoracic AIS.

SUMMARY OF BACKGROUND DATA: Anterior spinal fusion with instrumentation is currently undergoing evaluation as an alternative to posterior spinal fusion (PSF) for thoracic adolescent idiopathic scoliosis (AIS). However, the effect of an open thoracotomy on pulmonary ...

BACKGROUND: As a result of the increased appreciation of the three-dimensional nature of scoliosis and modern spinal instrumentation's improved corrective capabilities, there has been renewed interest in the correction and measurement of vertebral rotation. Computed tomography (CT), the gold standard for accuracy, is limited in its clinical utility owing to cost, radiation exposure, and the effects of postural changes on scoliosis curves and vertebral rotation. Consequently, the ...

STUDY DESIGN: A retrospective review of adolescents with main thoracic scoliotic curves surgically treated with either anterior release and posterior fusion or posterior fusion only.

OBJECTIVES: To compare the radiographic and clinical outcomes of two surgical treatments: anterior-posterior spinal fusion (APSF) versus posterior spinal fusion (PSF) alone in patients with large 70 degrees to 100 degrees thoracic adolescent idiopathic scoliosis (AIS) curves.

SUMMARY OF BACKGROUND DATA: ...