Instrumented lumbar arthrodesis in elderly patients: prospective study using cannulated cemented pedicle screw instrumentation
نویسندگان
چکیده
منابع مشابه
Intraoperative biomechanics of lumbar pedicle screw loosening following successful arthrodesis.
Pedicle screw loosening has been implicated in recurrent back pain after lumbar spinal fusion, but the degree of loosening has not been systematically quantified in patients. Instrumentation removal is an option for patients with successful arthrodesis, but remains controversial. Here, we quantified pedicle screw loosening by measuring screw insertion and/or removal torque at high statistical p...
متن کاملLumbosacral pedicle screw placement using a fluoroscopic pedicle axis view and a cannulated tapping device
BACKGROUND Pedicle screw insertions are commonly used for posterior fixation to treat various spine disorders. However, the misplacement of pedicle screws can lead to disastrous complications. Inaccurate pedicle screw placement is relatively common even when placement is performed under fluoroscopic control. In order to improve the accuracy of the screw placement, we applied a technique using g...
متن کاملEffect of spinal disease on successful arthrodesis in lumbar pedicle screw fixation.
OBJECT Pedicle screw fixation with transverse process fusion has gained widespread acceptance since its inception. Improved rates of arthrodesis have been demonstrated when this technique is used. The authors present one of the largest series of patients to undergo this procedure at a single center; one of the goals was to correlate construct length and spinal disease with rates of successful a...
متن کاملThe biomechanics of pedicle screw-based instrumentation.
There are three basic concepts that are important to the biomechanics of pedicle screw-based instrumentation. First, the outer diameter of the screw determines pullout strength, while the inner diameter determines fatigue strength. Secondly, when inserting a pedicle screw, the dorsal cortex of the spine should not be violated and the screws on each side should converge and be of good length. Th...
متن کاملLisfranc arthrodesis for chronic pain: a cannulated screw technique.
Nine patients with injury to the tarsometatarsal joint underwent fusion with cannulated screw fixation after conservative treatment had failed. Symptoms consisted of localized pain, forefoot abduction, and progressive collapse of the medical column. Early diagnosis and treatment were associated with a better functional outcome. The technique involved either a single or double incisional approac...
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ژورنال
عنوان ژورنال: European Spine Journal
سال: 2011
ISSN: 0940-6719,1432-0932
DOI: 10.1007/s00586-011-1907-2