Instrumentation failure following pedicle subtraction osteotomy: the role of rod material, diameter, and multi-rod constructs
نویسندگان
چکیده
منابع مشابه
Effect of severity of rod contour on posterior rod failure in the setting of lumbar pedicle subtraction osteotomy (PSO): a biomechanical study.
BACKGROUND Rod failure has been reported clinically in pedicle subtraction osteotomy (PSO) to correct flat back deformity. OBJECTIVE To characterize the fatigue life of posterior screw-rod constructs in the setting of PSO as a function of the severity of rod contour angle. METHODS A modified ASTM F1717 to 04 was used. Rods were contoured to the appropriate angle for the equivalent 20-, 40-,...
متن کاملBiomechanical analysis of revision strategies for rod fracture in pedicle subtraction osteotomy.
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...
متن کاملPedicle Subtraction Osteotomy for
STUDY DESIGN: A description of pedicle subtraction osteotomy for correction of kyphotic deformity of the cervical-thoracic spine and a prospective evaluation of the surgical outcomes. OBJECTIVES: To describe the surgical technique and the postoperative results of pedicle subtraction osteotomy in the upper thoracic spine and the cervical-thoracic junction. SUMMARY OF BACKGROUND DATA: Pedicle sub...
متن کاملBiomechanical study of rod stress after pedicle subtraction osteotomy versus anterior column reconstruction: A finite element study
BACKGROUND In an effort to minimize rod fractures and nonunion in pedicle subtraction osteotomy (PSO) constructs, surgeons have adopted multirod constructs and interbody cages. Anterior column realignment (ACR) with posterior column osteotomies is a minimally invasive alternative to PSO in sagittal balance correction, however, there is a paucity of evidence with respect to rod survival. METHO...
متن کاملPerioperative Complications of Pedicle Subtraction Osteotomy
Study Design Retrospective case series. Objective To describe the perioperative complications (0 to 90 days) associated with pedicle subtraction osteotomies (PSOs) performed at a tertiary spine center by two experienced spine surgeons who recently adopted the technique. Methods We reviewed all 65 patients (47 women and 18 men; mean age 60 years, range 24 to 80) who underwent a PSO at our instit...
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ژورنال
عنوان ژورنال: European Spine Journal
سال: 2016
ISSN: 0940-6719,1432-0932
DOI: 10.1007/s00586-016-4859-8