124 research outputs found
Rapid resolution of femoral head osteonecrosis after rotational acetabular osteotomy
The natural history of osteonecrosis of the femoral head is generally thought to be one of progressive deterioration if no intervention is undertaken. However, it is unknown whether surgical intervention is beneficial for patients with a small region of osteonecrosis. We observed rapid improvement of MRI findings after rotational acetabular osteotomy (RAO) was performed in a young patient with osteonecrosis of the femoral head. The band-like low signal area on T2-weighted images almost resolved by six months after surgery. He returned to work as an electrician by six months after surgery. Early surgical intervention such as RAO that alters the mechanical force acting on the necrotic region of the femoral head may accelerate the recovery of osteonecrosis and the improvement of symptoms
Clues from joint inversion of tsunami and geodetic data of the 2011 Tohoku-oki earthquake
The 2011 Tohoku-oki (Mw 9.1) earthquake is so far the best-observed megathrust rupture, which allowed the collection of unprecedented offshore data. The joint inversion of tsunami waveforms (DART buoys, bottom pressure sensors, coastal wave gauges, and GPS-buoys) and static geodetic data (onshore GPS, seafloor displacements obtained by a GPS/acoustic combination technique), allows us to retrieve the slip distribution on a non-planar fault. We show that the inclusion of near-source data is necessary to image the details of slip pattern (maximum slip ~48 m, up to ~35 m close to the Japan trench), which generated the large and shallow seafloor coseismic deformations and the devastating inundation of the Japanese coast. We investigate the relation between the spatial distribution of previously inferred interseismic coupling and coseismic slip and we highlight the importance of seafloor geodetic measurements to constrain the interseismic coupling, which is one of the key-elements for long-term earthquake and tsunami hazard assessment
Strain anomalies induced by the 2011 Tohoku Earthquake (M w 9.0) as observed by a dense GPS network in northeastern Japan
Contributions of poroelastic rebound and a weak volcanic arc to the postseismic deformation of the 2011 Tohoku earthquake
Ground uplift related to permeability enhancement following the 2011 Tohoku earthquake in the Kanto Plain, Japan
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Microscopy of Diffuse Nematic-Isotropic Transition in Main-Chain Nematic Liquid-Crystal Elastomers
Nematic-isotropic phase transition in liquid crystal elastomers (LCE), which drastically alters the macroscopic properties of the material, is attractive for both fundamental physics and applications. Here, we introduce new experimental methods based on polarized and fluorescence optical microscopy to characterize the phase transition of polydomain LCE, monitoring the order parameter and the nematic domain structure. It is demonstrated that polydomain main-chain nematic LCE exhibit an ordering transition very different from the classical first-order one, having a diffuse continuous nature. Unexpectedly, characteristic correlation length of the fading polydomain structure remains unchanged across the transition.ERC H202
Cotransplantation of mesenchymal stem cells and endothelial progenitor cells for treating steroid‐induced osteonecrosis of the femoral head
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