Injury
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Multicenter Study
Acetabular erosion following bipolar hemiarthroplasty: A Role for the size of femoral head?
Femoral neck fractures are the most frequent fractures in the elderly and hemiarthroplasty is the treatment of choice. The objective of this study is to identify predictive factors of acetabular erosion after bipolar hemiarthroplasty in a mobile independent population during a follow-up of ten years. ⋯ In bipolar hemiarthroplasty smaller head size lead to a polar wear implying a higher risk of acetabular erosion and migration; in our population this risk was consistent with the use of implant head < 48 mm diameter. Considering the absolute risk of a smaller FH size, the surgeon must evaluate the accuracy of measurement of the caliber, since as reported in previous studies, it can significantly underestimate the size.
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Multicenter Study
Retrospective, multicenter evaluation of complications in the treatment of diaphyseal femur fractures in pediatric patients.
Femoral shaft fractures are the commonest major pediatric fractures. For generations, traction and casting were the standard method of treatment for children. However, over the past two decades there has been growing recognition of the advantages of fixation and rapid mobilization. ⋯ TEN are an excellent internal fixation system if used by an expert surgeon and have a very low rate of complications. None of them produced permanent damage in the patients. In older children weighing more than 50 kg, alternative techniques such as subtrochanteric nailing, plates, or external fixation are advisable.
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Resorbable osteosynthesis has been used in orthopaedic surgery for many years. However, indications for the use of these implants in the surgery of traumatic lesions of the foot have not yet been clearly defined. The aim of this study is to analyse reported experiences with the bioabsorbable devices and to suggest guidelines for their use in foot trauma surgery METHODS: We conducted a literature review to identify known indications for the use of absorbable devices in traumatic lesions of the foot. We also conducted a retrospective analysis of our registry, reviewing patients with traumatic lesions of the foot who were treated surgically with absorbable devices from November 2005 to January 2017. To this end, we analysed for each case the indication for the use of resorbable devices and the incidence of related complications. ⋯ In foot trauma surgery the use of absorbable devices can give advantages. The most clearly defined indications are osteosynthesis of peri-articular or articular fragments in talus and calcaneus fractures, Sanders III calcaneal fractures and fracture-dislocations of Lisfranc's or Chopart's joints. Foreign-body reactions are rare and seem not to present a problem.
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Fragility fractures of the pelvis (FFP) show a notable rise in prevalence. Minimally invasive surgical fixation of FFP is increasingly advocated for its obvious advantages with reference to early mobilization and weight bearing. Concerns regarding the holding power of osteosynthetic materials in osteoporotic bone led to the development of cementing techniques. However, the role of cement augmentation in the surgical treatment of FFP has yet to be defined. Therefore, the aim of this study was to conduct a systematic review of the current literature concerning studies that are comparing the performance of cement augmented versus non-augmented sacroiliac (SI) screws. ⋯ In clinical case series, cement augmentation of SI screws appears to be a safe surgical technique without relevant complications and biomechanical studies demonstrate greater pull-out forces of augmented SI screws but no advantage in regard of cyclic loading. Hence, applicability of the mechanical testing results on the clinical situation are debatable. So far, there are neither retrospective nor randomized controlled studies comparing the performance of cemented and non-cemented SI screws in FFP. Therefore, the clinical benefit of SI screw cement augmentation is unclear and their use remains experimental.
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Randomized Controlled Trial
Daily subcutaneous Teriparatide injection increased bone mineral density of newly formed bone after tibia distraction osteogenesis, a randomized study.
Long bone defects are often treated by bone segment transport with the Ilizarov method requiring months spent with fixator mounted until bony consolidation of the newly formed bone. Shortening of consolidation would allow earlier fixator removal and earlier return to work. In pre-clinical studies parathyroid hormone, increased bone mineral density and mechanical properties of regenerate bone formed during distraction osteogenesis. ⋯ After adjustment for a potential phase difference, 8 weeks of Teriparatide treatment led to an additional 0.19 g/cm2 BMD increase (95%-CI:[0.11,0.28], p < 0.001). The ratio of the BMD increase between the two treatments was 0.33/0.14 = 2.43 (CI: [1.21,3.65]). Teriparatide treatment during the consolidation phase of distraction osteogenesis doubled the mineralization rate of the regenerate when compared to no treatment.