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) is dictated by SS and again by pelvic morphology (PI). 1 Ideal surgical restoration of these parameters is important to try to avoid mechanical complications. 36 , 37 Pelvic morphology and spine sagittal profile Four different types
Hospital del Trabajador, Santiago, Chile
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Hospital del Trabajador, Santiago, Chile
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Hospital Roberto del Río, Santiago, Chile
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). Fig. 1 Economy cone scheme according to Dubousset. 1 Sagittal profile alterations have been shown to affect quality of life of patients with a similar or even greater impact than pathologies such as chronic lung disease, visual disturbances
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lower cervical spine. For instance, an axial load onto the head might create either an impression fracture of the occipital condyles, an atlas ‘ring’ burst fracture or a compression fracture of a subaxial vertebral body. 8 - 10 In contrast, sagittal
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the spine sagittal profile, the PI, and the related acetabulum type differentiates LPC type 1 from LPC type 2. In LPC type 1, the pelvis has a low PI (<40°, spine type 1 or 2) and a high anteverted acetabulum (type 1). Patients with LPC type 1
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SUNY Downstate Medical School, New York City, New York, USA
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Department of Orthopaedic Surgery, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
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tilt ( 35 ). In parallel, the Roussouly classification was refined and identified ‘current’ and ‘theoretical’ sagittal profiles based on pelvic incidence ( 36 ). Now, concurrent consideration of both the SRS-Schwab and the Roussouly classification
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others ( 8 , 9 , 10 , 11 , 12 ). Furthermore, a large number or patients with cup orientations outside these boundaries do not exhibit hip instability ( 8 , 9 , 10 ). The interaction between the hip and spine and the assessment of the sagittal plane
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improved at six- and 12-month follow-up. 36 Results from these trials should be interpreted with caution since most of these studies are also sponsored by industry. 5 Sagittal balance of the spine has become an important concept in understanding
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) that are potentially life-treating. Due to the intimate relationship of the lumbosacral osseous components with the neural structures and the critical role played by the pelvis in transmitting forces between the spine and lower limbs, injuries in this
Department of Rehabilitation Medicine, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
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Department of Rehabilitation Medicine, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
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kyphosis, including body position, muscle changes, and affected joints. Figure 7 Round back/kyphosis. Flat back The flat back position reduces lumbar lordosis and adversely affects the sagittal balance of the spine ( 36 ). This
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: autologous iliac bone strut versus cage . J Neurosurg Spine 2008 ; 8 : 405 - 412 . 107 Klöckner C Valencia R Weber U . Alignment of the sagittal profile after surgical therapy of nonspecific destructive spondylodiscitis