Zygomatico-orbital fractures are a frequent sequel to trauma of the facial skeleton. The treatment of these fractures is various, depending on their clinical and radiological pictures. The authors describe these methods of positioning and immobilization of zygomatico-orbital fractures that have been used for years. In this context, the Jankowski’s frame and its subsequent modifications should b...

Current spaceborne SAR missions steer the satellite to follow an orbital tube in order to guarantee interferometric compatibility between data takes. In this contribution it is shown that the size of the orbital tube can impact the interferometric performance in terms of azimuth spectral decorrelation and azimuth coregistration requirements under high Doppler centroids, which can be specially c...

We analytically calculate some orbital effects induced by the Lorentz-invariance/ momentum-conservation parameterized post-Newtonian (PPN) parameter α3 in a gravitationally bound binary system made of a primary orbited by a test particle. We neither restrict ourselves to any particular orbital configuration nor to specific orientations of the primary’s spin axis ψ̂. We use our results to put pre...

This paper is concerned with on-board real-time position and rate prediction of the spacecraft centre-of-mass as input data to local orbital frame (LORF) determination for Low-Earth Orbit drag-free satellites. Study and simulation results are justified by Drag-Free and Attitude Control of the GOCE satellite (Gravity field and steady-state Ocean Circulation Explorer), the LORF being the instanta...

purpose : to report a patient with orbital pseudotumor masquerading as orbital cellulitis case report : a 42-year-old woman was referred to orbit and oculoplastic clinic with 6 days history of left orbital pain, proptosis, lid edema and fever. clinical finding included severe lid edema, chemosis, conjunctival injection and severe restriction in extraocular motility. she was diagnosed as orbital...

Orbit has a complex anatomy with multiple structures embedded in it. Primary malignant tumors of the orbit are rare. Orbital neoplasms are usually multifaceted and require an interdisciplinary approach. They occur in adults over the age of 60 years. But benign orbital conditions can occur at young age [1]. After confirming the diagnosis of orbital tumors; various treatment methods performed are...

purpose : to present a case of orbital cellulitis secondary to dacryocystitis case report : a 48-year-old postmenopausal lady was referred with a prominent proptosis of the right eye in addition to external ophthalmoplegia. she had one year history of lacrimation. orbital computed tomography (ct) revealed an extraconal infiltration near the medial and inferior orbital wall consistent with orbit...