STUDY DESIGN Retrospective study. OBJECTIVE To compare the long-term outcomes of correction surgery for Lenke 1A scoliosis patients among those with non-Substantially Touched Vertebra (nSTV), nSTV+1, or STV selected as lowest instrumented vertebra (LIV). SUMMARY OF BACKGROUND DATA Previous studies have documented good outcomes when last touching vertebra (LTV) was selected as LIV; however, ...

The hypothesis of this research was that elderly people with many remaining teeth and good occlusion (8020 achievers) would be able to maintain proper head and body posture, despite aging. The purpose of this study, as a first stage, was to clarify the aging phenomenon of cervical curvature in 8020 achievers in comparison with that in young adults. Subjects consisted of twenty-eight 8020 achiev...

The azygos vein is the vein that drains the thoracic wall and upper lumbar region. It is the important channel connecting the two venae cavae. Its origin is variable. On developmental grounds it should originate from the posterior surface of the inferior vena cava near the renal veins. This is known as lumbar azygos vein. In the absence of lumbar azygos, it is formed by the union of ascending l...

OBJECTIVE We analyzed the clinical and radiologic features of posterior apophyseal ring separation (PARS) with lumbar disc herniation and suggest the proper management options according to the PARS characteristics. METHODS We reviewed case series of patients with PARS who underwent surgery of lumbar disc herniation. Preoperative symptoms, neurologic status, Body Mass Index, preoperative and p...

UNLABELLED Lumbosacral transitional vertebrae can alter the biomechanics of weight transfer at the affected spinal segment. Low-back pain may result. This study assessed what skeletal scintigraphy reveals about stress associated with a lumbosacral transitional vertebra in young patients with low-back pain. METHODS The study population included 48 patients (30 male, 18 female; age range, 6-19 ...

objective: in this paper, finite element model of the l4 vertebra subjected to combination of compression and flexion loading in isotropic and anisotropic cases is investigated. methods: in both cases, the vertebra is considered homogeneous. also, the body of vertebra is divided to cancellous and cortical sections in anisotropic model, but the process is assumed isotropic such as isotropic mode...

The aim of this study was to measure the bone mineral density specific regions maxilla, mandible, and first cervical vertebra using Hounsfield unit trabecular microstructure pattern analysis compare two methods. In study, cone-beam computed tomography (CBCT) images were obtained from 58 patients. Trabecular thickness, number, separation, volume fraction measured in 484 for parameters grayscale ...

This study extends a previous research concerning intervertebral motion registration by means of 2D dynamic fluoroscopy to obtain a more comprehensive 3D description of vertebral kinematics. The problem of estimating the 3D rigid pose of a CT volume of a vertebra from its 2D X-ray fluoroscopy projection is addressed. 2D-3D registration is obtained maximising a measure of similarity between Digi...

OBJECTIVE To analyze the efficacy of the method for selecting the distal level of fusion in treatment of thoracic hyperkyphosis in patients with Scheuermann's disease. BACKGROUND The fusion area needs to include all the kyphotic deformity in Scheuermann patients; however, precise levels of the distal fixation have not been determined yet. STUDY DESIGN Retrospective cohort review. MATERIAL...

Objective: In this paper, finite element model of the L4 vertebra subjected to combination of compression and flexion loading in isotropic and anisotropic cases is investigated. Methods: In both cases, the vertebra is considered homogeneous. Also, the body of vertebra is divided to cancellous and cortical sections in anisotropic model, but the process is assumed isotropic such as isotropic mode...