Hoffa’s fat pad tumours like: Results of the arthroscopic resection

we performed a retrospective cohort study to increase awareness in  orthopaedic community of this rare but interesting disease which is oftenmisdiagnosed as meniscal pathology and to analyze present results of arthroscopic resection in seven patients. we retrospectively reviewed recordsfrom 2008-2012 and identified 7 patients with symptomatic Hoffa's fat pad impingement. The diagnosis was made by clinical exam, MRI imaging and verified arthroscopically. Of the 7 patients 2 were excluded due to receiving open resection. The remaining five underwent arthroscopic resection. Lysholm and American knee society scores were obtained pre and post operative and at final follow up. There was a significant improvement in their symptoms and function after the surgery at an average follow-up of 14 months. The one poor result was because of paresthesia over the distribution of the infrapatellar branch of the saphenous nerve after open resection. tumours like of the fat pad should be treated by arthroscopic resection because of less residual pain and less complication was found using arthroscopy. In case of high volume of tumours only open excision can provide complete excision

Mechanism of tetralin hydroconversion over bifunctional catalysts

International @ RAFFINAGE+LPI:CGEInternational audienceNon

Comparative study of the preferential oxidation of CO over Ir and Pt surfaces

International @ SURFACES+LPI:FMOInternational audienceNon

Mechanism of tetralin ring opening and ring contraction over bifunctional Ir/Si02-Al2O3 catalysts

International @ RAFFINAGE+LPI:CGEInternational audienceNon

Surface study of the hydrogen-free or preferential oxidation of CO: Iridium vs. platinum

RAFFINAGE:MATERIAUX:SURFACES+LPI:SNA:FMOCO oxidation in the absence or presence of hydrogen has been investigated in the 0.4-15 kPa range over Ir(1 1 1), Ir(1 1 2), Pt(1 1 1) and Pt(1 1 2) single-crystal surfaces. Iridium appears more active than platinum in CO oxidation, and more active and selective than platinum in preferential CO oxidation in the presence of hydrogen (PROX), both under stoichiometric and oxygen-rich CO:O-2 conditions. Stepped surfaces are more active than flat surfaces. These results are not consistent with a CO-blocking model if only adsorption energies of pure CO are taken into account. A beneficial effect of a small amount of hydrogen on CO oxidation over Pt and Ir surfaces has been evidenced under specific conditions. Experiments on Pt(1 1 1) show that it is not related to water formation and does not originate from an irreversible H-2-induced surface restructuring. (C) 2012 Elsevier B. V. All rights reserved

Comparative study of the catalytic hydroconversion of cyclopentane over iridium and platinum single-crystal surfaces

SSCI-VIDE+ECI2D:ING+FMO:SNA:LPIInternational audienceIn the context of fuel upgrading by selective ring opening of naphthenes, we have investigated the catalytic conversion of cyclopentane in large hydrogen excess over iridium and platinum single-crystal surfaces. Both (111) and (112) orientations have been considered. The catalytic tests have been performed at 1 kPa and 25-600 degrees C using a recently developed surface reactor equipped with laser heating and online gas chromatography. Only cyclopentene and C-1-C-4 cracking products are formed on iridium, while platinum additionally catalyzes the formation of pentane around 200 degrees C, which dehydrogenates to pentene at 250 degrees C. Noticeably, on both metals, the surface steps prevent hydrocarbon cracking (up to 400 degrees C) at the benefit of dehydrogenation. In all cases, a carbon overlayer is formed on the surfaces in the course of the reaction. (C) 2013 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved

A comprehensive two-dimensional gas chromatography coupled with quadrupole mass spectrometry approach for identification of C10 derivatives from decalin

Piccolo, Laurent Nassreddine, Salim Toussaint, Guy Geantet, Christoph

Catalyseurs bimétalliques à base d'iridium pour l'ouverture de cycles naphténiques

nationa

Mechanism of tetralin ring opening and ring contraction over bifunctional Ir/SiO2-Al2O3 catalysts

RAFFINAGE+CGE:GTU:LPI:SNANon

Catalyseurs bimétalliques à base d'iridium pour l'ouverture de cycles naphténiques

nationa