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STUDY DESIGN A radiographic study of 153 normal volunteers. OBJECTIVES 1) To test the hypothesis that the vertical projection of the sum of the ground reactive forces of a standing patient is located in the same place in the sagittal plane as the C7 plumb line; 2) to determine if there are consistent geometric relationships between the location of the top(More)
A prospective analysis of the sagittal profile of 100 healthy young adult volunteers was carried out in order to evaluate the relationship between the shape of the pelvis and lumbar lordosis and to create a databank of the morphologic and positional parameters of the pelvis and spine in a normal healthy population. Inclusion criteria were as follows: no(More)
STUDY DESIGN Prospective study of the sagittal plane alignment of the spine and pelvis in the normal pediatric population. OBJECTIVES To document the sagittal alignment of the spine and pelvis and its change during growth in the normal pediatric population. SUMMARY OF BACKGROUND DATA Pelvic morphology as well as sagittal alignment of the spine and(More)
INTRODUCTION Many studies suggest the importance of the sagittal sacropelvic balance and morphology in spinal and hip disorders. This study describes the normal age- and sex-related changes in sacropelvic morphology and balance in a prospective cohort of asymptomatic adults without spinal disorder. MATERIALS AND METHODS A prospective cohort of 709(More)
STUDY DESIGN Prospective study of normal sagittal global spinal balance in the Caucasian adult population. OBJECTIVE To document values for parameters of global spinal balance in 709 asymptomatic adults without spinal pathology. SUMMARY OF BACKGROUND DATA Previous studies have investigated sagittal spinal balance in the normal population, but there is(More)
STUDY DESIGN A review article. OBJECTIVES The purpose of this article is to review pertinent radiologic measurements for the evaluation of spino-pelvic balance in developmental spondylolisthesis, based on the experience of the Spinal Deformity Study Group. SUMMARY OF BACKGROUND DATA Over the past decade, pelvic morphology has been shown to significantly(More)
The sagittal spinopelvic balance is poorly documented in normal pediatric subjects. The purpose of this study is to characterize the sagittal spinopelvic balance in the pediatric population and to evaluate the correlations between spinopelvic parameters. Seven parameters were evaluated from the lateral standing radiographs of 341 normal subjects aged 3-18(More)
This study is a retrospective multi-centre analysis of changes in spino-pelvic sagittal alignment after surgical correction of L5-S1 developmental spondylolisthesis. The purpose of this study was to determine how sagittal spino-pelvic alignment is affected by surgery, with the hypothesis that surgical correction at the lumbo-sacral level is associated with(More)
STUDY DESIGN Retrospective review of a radiographic database of high-grade spondylolisthesis patients in comparison with asymptomatic controls. OBJECTIVE To analyze the sagittal spinopelvic alignment in high-grade spondylolisthesis patients and identify subgroups that may require reduction to restore sagittal balance. SUMMARY OF BACKGROUND DATA(More)
The goal of this study was to adapt roentgen photogrammetry to in vivo studies of shoulder skeletal motion during arm elevation in the scapular plane. Numerous in vitro and in vivo studies have been published describing shoulder bone movements. They involve plain radiographic measurements and utilize a three-dimensional (3D) approach. Measurements are(More)