Vidyadhar V. Upasani

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STUDY DESIGN Retrospective chart review and radiographic analysis. OBJECTIVE To determine if differences exist in the sagittal alignment of adolescent idiopathic scoliosis (AIS) patients with thoracic versus thoracolumbar curve patterns. SUMMARY OF BACKGROUND DATA Relative anterior overgrowth has been suggested as the possible pathomechanism behind(More)
STUDY DESIGN Retrospective analysis of prospectively collected multicenter series. OBJECTIVE To evaluate the sagittal profile of surgically treated adolescent idiopathic scoliosis (AIS) patients. SUMMARY OF BACKGROUND DATA With the increasing popularity of segmental pedicle screw spinal instrumentation, thoracic kyphosis (TK) is often sacrificed to(More)
BACKGROUND Modified Dunn osteotomy has gained popularity over the past decade in the treatment of moderate to severe adolescent slipped capital femoral epiphysis. The purpose of this study was to retrospectively evaluate a consecutive series of adolescent slipped capital femoral epiphysis patients treated with the modified Dunn procedure at a single(More)
STUDY DESIGN A retrospective evaluation of adolescent idiopathic scoliosis (AIS) patients treated with selective thoracic instrumentation and fusion. OBJECTIVE To evaluate the predictors and the effect of surgical approach (anterior versus posterior) on spontaneous lumbar curve correction (SLCC) after selective thoracic fusion in patients with structural(More)
STUDY DESIGN A retrospective review of surgical outcomes in adolescents with idiopathic scoliosis. OBJECTIVE To determine if an association exists between body mass and surgical outcomes in adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA Obesity has reached epidemic proportions globally. In adults, obesity increases the likelihood of(More)
STUDY DESIGN Retrospective review of a multicenter prospectively collected series of adolescent idiopathic scoliosis (AIS) patients. OBJECTIVE To compare uninstrumented compensatory curve spontaneous derotation of the rib hump and lumbar prominence after selective lumbar or thoracic fusions in AIS. SUMMARY OF BACKGROUND DATA Coronal correction of the(More)
PURPOSE To evaluate single screw fixation stability, in the treatment of slipped capital femoral epiphysis, as a function of screw thread distribution across the physis. STUDY DESIGN In vitro biomechanical study. METHODS Thirty porcine proximal femurs were sectioned through the physeal line and stabilized with a cannulated 7.3-mm stainless steel AO(More)
BACKGROUND The surgical outcomes in patients with scoliosis at two years following anterior thoracoscopic spinal instrumentation and fusion have been reported. The purpose of this study was to evaluate the results at five years. METHODS A consecutive series of forty-one patients with major thoracic scoliosis treated with anterior thoracoscopic spinal(More)
BACKGROUND Increased attention is being placed on hip preservation surgery in the early adolescent. An understanding of three-dimensional (3-D) acetabular development as children approach maturity is essential. Changes in acetabular orientation and cartilage topography have not previously been quantified as the adolescent acetabulum completes development.(More)
STUDY DESIGN In vitro biomechanical investigation. OBJECTIVE To evaluate differences in biomechanical stability of vertebral compression fractures repaired using balloon kyphoplasty versus a titanium mesh implant. SUMMARY OF BACKGROUND DATA Vertebral compression fractures may be stabilized using an expandable balloon followed by cement injection. There(More)