Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca
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Acta Chir Orthop Traumatol Cech · Jan 2011
Comparative StudyBiomechanical comparison of an interspinous device and a rigid stabilization on lumbar adjacent segment range of motion.
Decompression surgery with or without fusion is the gold standard treatment of lumbar spinal stenosis, but adjacent segment degeneration has been reported as a long-term complication after fusion. This led to the development of dynamic implants like the interspinous devices. They are supposed to limit extension and expand the spinal canal at the symptomatic level, but with reduced effect on the range of motion of the adjacent segments. The aim of the present study is the evaluation of the biomechanical effects on the range of motion (ROM) of adjacent lumbar segments after decompression and instrumentation with an interspinous device compared to a rigid posterior stabilization device. ⋯ The hypothesis, that an interspinous device would reduce the stress on adjacent segments compared to a rigid posterior stabilization device, could not be demonstrated with this biomechanical in vitro study. Therefore, the protection of adjacent segments after instrumentation with dynamic devices is still not completely achieved.
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Acta Chir Orthop Traumatol Cech · Jan 2011
Impact of kyphoplasty treatment for vertebral compression fractures on pain and function in 105 patients.
Vertebral compression fractures are very common. Symptomatic relief with conservative therapy is often difficult to achieve. Balloon kyphoplasty is a relatively new technique which stabilises the vertebral body and restores spinal alignment in recent fractures, it achieves significant pain relief and improved functional outcome is reported. The aim of this prospective study was to determine the level of pain relief and functional outcome in patients who were initially treated conservatively for 4-6 weeks and if symptoms did not have tendency to resolve, then had kyphoplasty surgery. ⋯ Balloon kyphoplasty proved to be safe surgical technique and should be considered in patients with ongoing pain following an acute vertebral compression fracture that does not improve with initial conservative treatment. It significantly improves pain and functional status in elderly patients.
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Acta Chir Orthop Traumatol Cech · Jan 2011
Comparative Study[Comparison of functional outcomes in angle-stable osteosynthesis of comminuted fractures of the proximal humerus with those in percutaneous Kirschner-wire fixation. A prospective study of mid-term results].
To evaluate the mid-term results in a group of patients with displaced comminuted (three- and four-fragment) fractures of the proximal humerus treated by angle-stable plate osteosynthesis and compare them with the results in the patients in whom the method of percutaneous Kirschner-wire (K-wire) fixation was used. ⋯ The analysis of functional outcomes showed that the therapeutic effect of K-wire transfixation was significantly worse than the effect of the angle-stable plate technique, and therefore the authors stopped using this method. At present intramedullary nailing is indicated in two- and three-fragment fractures and in some less displaced four-fragment fractures. An angle-stable plate is used in severely displaced four-fragment fractures. If the head is broken or dislocated, older patients are primarily indicated for hemiarthroplasty and younger ones for humeral head reconstruction.
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Acta Chir Orthop Traumatol Cech · Jan 2011
[Vertebral body augmentation using a vertebral body stent].
Osteoporotic vertebral fractures can be treated by minimally invasive percutaneous vertebral augmentation with bone cement using vertebroplasty or balloon kyphoplasty. Transcutaneous reduction and vertebral body stenting has been the most recent principle. In contrast to balloon placement in kyphoplasty, the stent remains in the vertebral body and supports both the vertebral body and cement filling. In this retrospective study we present the essential information on the method and our first results. ⋯ The novel method of vertebral body stenting with cement augmentation provides a rapid pain relief, gives stability to fracture reduction and has a low rate of cement leakage. However, care must be taken not to indicate cases with a damaged posterior corticalis of the vertebral body.
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Acta Chir Orthop Traumatol Cech · Jan 2011
[Single cannulated screws for stabilisation of pelvic ring and acetabular fractures].
Current trends in minimally invasive surgery together with advances in computed tomography and fluoroscopic guidance allow us to perform close reduction and percutaneous fixation also in non-displaced or minimally displaced fractures of the pelvic ring and acetabulum. Authors report the method of percutaneous screw fixation. ⋯ In specific localisations, the percutaneous fixation of pelvic ring and acetabular fractures using single screws presents a new surgical technique for which the indications have not been exactly defined yet. The procedure should be performed by an experienced surgeon ready to convert surgery from a minimally invasive procedure to an open one, if the navigation technique used does not provide a reliable guidance or when the fracture reduction or stabilisation fails.