نتایج جستجو برای: pedicle subtraction osteotomy
تعداد نتایج: 25451 فیلتر نتایج به سال:
STUDY DESIGN Retrospective case series. OBJECTIVE To evaluate if spine measurement software can simulate sagittal alignment following pedicle subtraction osteotomy (PSO). METHODS We retrospectively reviewed consecutive adult spinal deformity patients who underwent lumbar PSO. Sagittal measurements were performed on preoperative lateral, standing radiographs. Sagittal measurements after simu...
Introduction Studies document rod fracture in pedicle subtraction osteotomy (PSO) settings where disk spaces were preserved above or adjacent to the PSO. This study compares the multidirectional bending rigidity and fatigue life of PSO segments with or without interbody support. Methods Twelve specimens received bilateral T12-S1 posterior fixation and L3 PSO. Six received extreme lateral interb...
BACKGROUND Pseudoarthrosis after pedicle subtraction osteotomy (PSO) can require revision surgery due to posterior rod failure, and the stiffness of these revision constructs has not been quantified. OBJECTIVE To compare the multidirectional bending stiffness of 7 revision strategies following rod failure. METHODS Seven fresh-frozen human spines (T11-pelvis) were tested as follows: (1) post...
OBJECT Thoracolumbar fractures, treated operatively or nonoperatively, may cause painful kyphotic deformities over time. A pedicle subtraction osteotomy (PSO) is a single-stage posterior procedure designed to correct sagittal plane deformity. Although it was initially used to treat nontraumatic conditions, a PSO can be highly effective in chronic, posttraumatic fractures of the lumbar spine. In...
OBJECT Pedicle subtraction osteotomy (PSO) is a spinal realignment technique that may be used to correct sagittal spinal imbalance. Theoretically, the level and degree of resection via a PSO should impact the degree of sagittal plane correction in the setting of deformity. However, the quantitative effect of PSO level and focal angular change on postoperative spinopelvic parameters has not been...
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