نتایج جستجو برای: fracture criteria
تعداد نتایج: 349854 فیلتر نتایج به سال:
This paper explores the fracture process based on finite element simulation. Both probabilistic and deterministic methods are employed to model crack initiation, and several commonly used criteria are utilized to predict crack growth. It is concluded that the criteria of maximum tensile stress, maximum normal stress, and maximum Mises stress, as well as the Coulomb-Mohr criterion are able to pr...
Economical design with sufficient fracture resistance is of high importance in any offshore pipeline projects. Using an Engineering Critical Assessment (ECA), alternate acceptance criteria for pipeline girth weld inspection can significantly reduce the cost of constructing of offshore oil and gas pipeline by minimizing unnecessary repairs. Offshore pipelines consist of short pipeline segments c...
BACKGROUND Positive anticyclic citrullinated peptide (anti-CCP+) is associated with bone loss in patients with rheumatoid arthritis (RA). However, whether overall positivity or specific levels of anti-CCP are associated with prevalent fracture or a 10-year probability of fracture remains unclear. METHODS This interim analysis of an RA registry was conducted at Chang Gung Memorial Hospital in ...
BACKGROUND There is a large quality of care gap for patients with osteoporosis. As a fragility fracture is a strong indicator of underlying osteoporosis, it offers an ideal opportunity to initiate investigation and treatment. However, studies of post-fracture populations document screening and treatment rates below 20% in most settings. This is despite the fact that bone mineral density (BMD) s...
BACKGROUND A concomitant tibial shaft and posterior malleolar fracture is a type of regular compound fracture. The associated posterior malleolar fractures are mostly occult fractures, which often do not show a fracture line on ordinary films, and thus lead to a high rate of misdiagnosis. The aim of the present study was to investigate factors helpful for the pre-operative detection of concomit...
Roughly half of the femoral fracture patients diagnosed with AFF according to the criteria suggested by a task force of the American Society for Bone and Mineral Research (ASBMR) have not undergone bisphosphonate (BP) therapy. One suspected cause of such fractures is severe bone loss due to osteomalacia, but the pathogenesis remains unknown. We report a case of an 84-year-old woman with AFF not...
PURPOSE Clinical and radiological evaluation of the results of the technique of elevation and grafting of osteochondral marginal impaction fragment of posterior wall acetabular fractures. METHODS Twenty patients available for this study had fracture acetabulum with marginal impaction fragment. Elevation, reduction and bone graft impaction of the defect were the technique in all cases. Follow-...
BACKGROUND Fixation failure is a relatively common sequela of surgical management of proximal humerus fractures (PHF). The purpose of this study is to understand the current state of the literature with regard to the biomechanical testing of proximal humerus fracture implants. METHODS A scoping review of the proximal humerus fracture literature was performed, and studies testing the mechanica...
A retrospective review was conducted at an academic trauma center to determine whether fracture characteristics or aspects of native anatomy are predictive of early failure after fixation of posterior wall acetabular fractures. A chart review of posterior wall acetabular fractures treated from 2004 to 2009 yielded the study group that met the inclusion criteria. The study group included 18 cons...
BACKGROUND Supracondylar fracture of humerus is the most common fracture in first decade of life. There are various treatment modalities for this fracture i.e closed reduction and casting, open reduction and internal fixation and percutaneous pinning. Study was conducted to know the outcome of Percutaneous Pinning in the management of displaced supracondylar fracture of humerus in children. M...
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