Objective In the management of moderate adolescent idiopathic scoliosis (AIS), spinal orthosis is generally applied. Nonetheless, the time to reach its maximal corrective effect after donning or the time to return to the original scoliotic curvature after doffing may not be well understood because the spine has low stiffness and viscoelastic properties and continuous radiographic assessments ar...

Background Rasterstereography is a method for stereophotogrammetric surface measurements of the back based on moiré topography[1]. In contrast to all other optical devices, rasterstereography allows an analysis not only of the back surface but also of the underlying spine. This is possible by the use of a spine model, which was created by Turner-Smith[2,3]. So far rasterstereography only allows...

This paper describes coherent gradient sensing (CGS) as an optical, full-field, real-time, nonintrusive, noncontact technique for measurement of curvature and curvature changes in single-layered and multilayered thin films deposited on substrates. The sensitivity of the basic CGS technique is enhanced using optical fringe multiplication to map curvature in very flat specimens (κ ≤ 0.001 m−1). S...

[Purpose] The aim of this study was to investigate the changes in pain intensity, spinal curvature, and balance and gait ability according to the pregnancy period. [Subjects] Nineteen pregnant women and fifteen nonpregnant women were recruited in this study. [Methods] The pain intensity, spinal curvature, gait, and balance of pregnant women were measured according to the pregnant period (2nd an...

Spirometric indices, lung volumes, maximum voluntary ventilation, and maximum inspiratory and expiratory pressures were measured in 44 adolescents with mild idiopathic scoliosis (spinal curvature less than 30 degrees). All were symptom free, but six (13.6%) showed a restrictive defect with forced vital capacity less than 80% of predicted. In 12 subjects (27.3%) maximum voluntary ventilation was...

Vertebral development is a dynamic and complicated process, and defects can be caused by a variety of influences. Spinal curvature with no known cause (idiopathic scoliosis) affects 2-3% of the human population. In order to understand the etiology and pathogenesis of complex human skeletal defects such as idiopathic scoliosis, multiple models must be used to study all of the factors affecting v...

BACKGROUND Low back and pelvic pain is one of the most frequently reported disorders in pregnancy, however etiology and pathology of this problem have not been fully determined. The relationship between back pain experienced during pregnancy and posture remains unclear. It is challenging to measure reliably postural and spinal changes at the time of pregnancy, since most imaging studies cannot ...