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Lateral ankle instability, resulting from the inability of ankle ligaments to heal after injury, is believed to cause a change in the articular contact mechanics that may promote cartilage degeneration. Considering that lateral ligaments' insufficiency has been related to rotational instability of the talus, and that few studies have addressed the contact mechanics under this condition, the aim of this work was to evaluate if a purely rotational ankle instability could cause non-physiological changes in contact pressures in the ankle joint cartilages using the finite element method. A finite element model of a healthy ankle joint, including bones, cartilages and nine ligaments, was developed. Pure internal talus rotations of 3.67°, 9.6° and 13.43°, measured experimentally for three ligamentous configurations, were applied. The ligamentous configurations consisted in a healthy condition, an injured condition in which the anterior talofibular ligament was cut, and an injured condition in which the anterior talofibular and calcaneofibular ligaments were cut. For all simulations, the contact areas and maximum contact pressures were evaluated for each cartilage. The results showed not only an increase of the maximum contact pressures in the ankle cartilages, but also novel contact regions at the anteromedial and posterolateral sections of the talar cartilage with increasing internal rotation. The anteromedial and posterolateral contact regions observed due to pathological internal rotations of the talus are a computational evidence that supports the link between a pure rotational instability and the pattern of pathological cartilaginous load seen in patients with long-term lateral chronic ankle instability.
To present clinical ocular manifestations, radiological features and surgical results of giant paranasal osteomas involving the orbit.

Retrospective, interventional, case series.

The study included patients treated for giant paranasal osteoma involving the orbit. Total or subtotal excision of the tumor was performed via external approach. Clinical characteristics including presenting symptoms, radiologic investigation, histopathology and details of the surgery were recorded.

Of the six patients included; four were male and two were female. Mean age was 46.8 years (range 12-70 years). Five patients had unilateral, one patient had bileteral disease. The presenting complaints included complete (
 = 2/6) or partial (
 = 4/6) limitation of eye movements depending on the location and size of the tumor, diplopia (
 = 5/6), vision loss (
 = 2/6) exophthalmos (
 = 6/6) and reduced pupillary light reflex (
 = 2/6). The presumed origin of the tumor was frontoethmoidal region (
 = 2/6), frontal sinus (
 = 3/6) and ethmoid sinus (
 = 1/6). Total resection was achieved in three of the patients whereas partial resection was achieved in remaining three patients due to risk of incremental neurological damage. Mild ptosis was observed in all patients during the postoperative period (temporary,
 = 4; permanent,
 = 2).

Despite the benign nature of osteomas, severe functional impairment including vision loss due to compression of the optic nerve and diplopia might occur in case of orbital involvement. Osteomas with an orbital extension > %50 of the bony orbit volume are more prone to cause irreversible visual loss. Surgical resection is still the mainstay of therapy.
%50 of the bony orbit volume are more prone to cause irreversible visual loss. Surgical resection is still the mainstay of therapy.Extracorporeal membrane oxygenation (ECMO) is considered a salvage therapy in patients with acute respiratory distress syndrome (ARDS) and refractory hypoxemia (hypoxemia persisting despite lung-protective ventilation). One aspect of ECMO is whether there would be an application of the technology related to the Coronavirus pandemic. The number of people diagnosed with Coronavirus disease (COVID19) has crossed the five million mark on 9 August 2020, with a case fatality rate of 5.2%. Due to this exponential increase in the number of coronavirus disease (COVID19) cases particularly the ones associated with ARDS, experts are evaluating the need for ECMO in intensive care units. Herein, we chronicle a review encompassing the available evidence on ECMO and its potential role in COVID19 ARDS, as we aim for optimal patient care with appropriate resource utilization and conservation.Primary open-angle glaucoma (POAG) is an age-dependent, intraocular pressure (IOP)-related degeneration of the retinal ganglion cells (RGC). At present, IOP is the only modifiable factor that has been identified to prevent glaucomatous vision loss. Though the pathogenesis of glaucomatous optic neuropathy is still not well understood, increasing evidence suggests oxidative stress may contribute to the induction and progression of glaucoma. Furthermore, antioxidant use may be protective against glaucoma through various mechanisms, including reducing IOP, preserving vascular health, and preventing ganglion cell loss. This article provides a comprehensive review of the effect of oxidative stress, diet, and antioxidant therapy on IOP and open-angle glaucoma.COVID-19 has resulted in broad impacts on the economy and aspects of daily life including our collective mental health and well-being. The Australian health care system already faces limitations in its ability to treat people with mental health diagnoses. Australia has responded to the COVID-19 outbreak by, among other initiatives, providing reimbursement for telehealth services. However, it is unclear if these measures will be enough to manage the psychological distress, depression, anxiety and post-traumatic distress shown to accompany infectious disease outbreaks and economic shocks. Decision making has focused on the physical health ramifications of COVID-19, the avoidance of over-burdening the health care system and saving lives. We propose an alternative framework for decision making that combines life years saved with impacts on quality of life. selleck kinase inhibitor A framework that simultaneously includes mental health and broader economic impacts into a single decision-making process would facilitate transparent and accountable decision making that can improve the overall welfare of Australian society as we continue to address the considerable challenges that the COVID-19 pandemic is creating.
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