Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Apr 2012
Randomized Controlled Trial Comparative StudyA comparative study on screw loosening in osteoporotic lumbar spine fusion between expandable and conventional pedicle screws.
The aim of this study is to compare the rate of screw loosening and clinical outcomes of expandable pedicle screws (EPS) with those of conventional pedicle screws (CPS) in patients treated for spinal stenosis (SS) combined with osteoporosis. ⋯ EPS can decrease the risk of screw loosening and achieve better fixation strength and clinical results in osteoporotic lumbar spine fusion.
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Arch Orthop Trauma Surg · Apr 2012
Survivorship of second-generation metal-on-metal primary total hip replacement.
Second generation metal-on-metal total hip replacements (THR) were introduced in the late 1980s and various studies reported conflicting data on their outcome. ⋯ As there was no superior probability of survival, and there have been concerns on putative local and systemic toxicity of metal debris, the use of second-generation metal-on-metal articulations for primary THR remains moot.
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Arch Orthop Trauma Surg · Apr 2012
Effects of microendoscopy-assisted reduction and screw fixation through a single mini-incision on posterior cruciate ligament tibial avulsion fracture.
There are various surgical approaches for the treatment of posterior cruciate ligament (PCL) injury-associated tibial fracture avulsion, including arthroscopy-assisted surgery and open posterior surgery. However, none of these treatments are perfect. We have established a simple procedure with microendoscopy-assisted reduction and cannulated screw fixation for the treatment of this disease through a single mini-incision. In this study, we delineated the effects of this surgical approach for patients with PCL tibial avulsion fracture. ⋯ Increased stability, functional improvement, and few complications were observed in patients of PCL injury-associated tibial fracture avulsion treated with the microendoscopy-assisted reduction and cannulated screw fixation through a single mini-incision.
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Arch Orthop Trauma Surg · Apr 2012
Review Meta Analysis Comparative StudySystematic review of cemented versus uncemented hemiarthroplasty for displaced femoral neck fractures in older patients.
The purpose of this review was to assess the effectiveness and safety of cemented versus uncemented hemiarthroplasty for displaced femoral neck fractures in older patients. We searched the Cochrane Library, MEDLINE and EMBASE for published randomized clinical trials comparing cemented with uncemented hemiarthroplasty for femoral neck fractures. ⋯ The overall incidence of residual pain at 1 year after operation was 23.6% in the cemented prosthesis and 34.4% in the uncemented, with significant difference (relative risk 0.69, 95% CI 0.53-0.90; P = 0.007; fixed-effect models). The available evidence suggested that compared with uncemented hemiarthroplasty, cemented hemiarthroplasty in treating the elderly with displaced femoral neck fractures was not associated with a higher risk of mortality, reoperation and complications but can reduce the risk of residual pain and provide better functional results.
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Arch Orthop Trauma Surg · Apr 2012
Ultrasound-based computer navigation of the acetabular component: a feasibility study.
This feasibility study investigated the accuracy of anterior pelvic reference plane (APP) registration and acetabular cup orientation in two cadavers with different BMIs. ⋯ Our preliminary results confirm that ultrasound navigation is a highly accurate tool that allows a reproducible registration of the APP and thereby enables accurate and precise intraoperative determination of the acetabular cup orientation also in patients with increased BMI.