INTRODUCTION Many existing balance control models have adopted a single-segment inverted pendulum to model the human body, and have focused on investigating postural sway only in the sagittal plane (e.g. Maurer et al., 2005). However, evidence indicates that postural sway in the frontal plane is important, and able to account for different balance control mechanisms as well (e.g. McClenaghan et...

  Background: To determine the most important preoperative factors that affect postoperative coronal parameters of scoliotic curves.   Methods: All Adolescent Idiopathic Scoliosis (AIS) patients included in the study were classified according to Lenke and King Classification. The fusion levels were selected according to the rigidity of the existing curves (correction less than 50%), tilt...

BACKGROUND Neuromuscular training that includes both plyometric and dynamic stabilization/balance exercises alters movement biomechanics and reduces ACL injury risk in female athletes. The biomechanical effects of plyometric and balance training utilized separately are unknown. HYPOTHESIS A protocol that includes balance training without plyometric training will decrease coronal plane hip, kn...

The kinematic relationship between the hip and the axial skeleton is dynamic and can be variable based on individual anatomy. It has been shown [1] that pelvic incidence (sacral slope + pelvic tilt) can be used as a proxy to determine the ability of the pelvis to accommodate changes in sagittal balance. Individuals have varied pelvic incidence and thus may adapt differently degenerative and/or ...

OBJECT The object of this study was to assess the effectiveness of preoperative planning in the restoration of balance and view angle in patients treated with lumbar osteotomy in ankylosing spondylitis (AS). METHODS The authors prospectively analyzed 8 patients with a thoracolumbar kyphotic deformity due to AS that was treated using a closing wedge osteotomy (CWO) of the lumbar spine to corre...

Objective Recent studies have demonstrated sagittal spinal balance was more important than coronal balance in terms of clinical result of surgery for adult spinal deformity. Notably, Schwab reported one of the target spinopelvic parameters for corrective surgery was that lumbar lordosis (LL) should be within +/10 degrees of pelvic incidence (PI). The present study was aimed to investigate wheth...

INTRODUCTION The aim of surgical treatment in idiopathic scoliosis is correction, solid fusion and restoration of normal sagittal alignment of the spinal curves. The goal of this paper is to formulate a new uniform approach to evaluation of treatment outcomes in idiopathic scoliosis patients, considering not only the degree of correction but also coronal and sagittal balance. MATERIAL AND MET...

STUDY DESIGN This study is a retrospective review of the initial enrollment data from a prospective multicentered study of adult spinal deformity. OBJECTIVES The purpose of this study is to correlate radiographic measures of deformity with patient-based outcome measures in adult scoliosis. SUMMARY OF BACKGROUND DATA Prior studies of adult scoliosis have attempted to correlate radiographic a...

I appreciate the insight provided by this letter to the authors regarding the issue of sagittal malalignment in this case report. Although the case report was directed at the postoperative seroma and potential relationship with the use of vancomycin, andwas not related to the sagittal alignment per se, the input provided in this case ismuch appreciated. In fact, I went back and remeasured the p...

Background Recently, the sagittal evaluation of the spine moved from a regional spinal view (curves) to the bodily view (“sagittal balance”), looking at the relationships between the gravity force (vertical or horizontal lines) and pelvic, and spinal, parameters. To move the analysis of the frontal plane from a spinal to a bodily view, we introduce the concept of “slopes”: inclination of the sp...