Trial femoral head loss in to the soft tissues of pelvis during primary total hip replacement: a case report

The loss of trial femoral head in the soft tissues is a rare per operative complication in total hips replacement. We report the loss of the femoral head in surrounding hip joint soft tissues and unsuccessful attempts to locate and remove it. Surgeons should be aware of such complication as trial femoral heads usually are made from non radiolucent material and cannot be detected by regular x-ray examination during surgery. The industry should consider manufacturing trial femoral heads from x-ray visible material

Delayed hospitalization increases mortality in displaced femoral neck fracture patients

Background and purpose Reports regarding the relationship between delayed surgery and mortality in femoral neck fracture patients are contradictory. We could not find any study in the literature investigating delayed arrival to hospital and delayed surgery as separate factors affecting mortality in femoral neck fracture patients, which was the purpose of our study

Total internal reflection ellipsometry for kinetics-based assessment of bovine serum albumin immobilization on ZnO nanowires

International audienceThe properties of the ZnO-NWs were investigated by utilizing spectroscopic ellipsometry under TIRE configuration during real-time measurement of covalent BSA immobilization.The ZnO material exhibits a rich family of nanostructures, which show great potential for the sensitivity improvement of optical detection systems. In this work, ~350 nm ZnO nanowires (ZnONWs) were electrochemically deposited on ZnO and indium tin oxide coated glass (ZnONWs/ZnO/ITO/glass) substrate. ZnO-NWs were modified with N-(3-Aminopropyl)triethoxysilane (APTES) for covalent bovine serum albumin (BSA) immobilization. The studies were performed using spectroscopic total internal reflection ellipsometry (TIRE) setup based on the Kretschmann configuration. The refractive index dispersion of ZnO-NWs in the air was obtained from the optical model applying Bruggeman effective medium approach. It was determined that ZnO-NWs effective layer consists of 30 % ZnO and 70 % void. Reflectance difference before and after ZnO-NWs modification with BSA was 6.6 times higher than in the case of plain ZnO layer. The Δ kinetics of covalent BSA immobilization on APTES/ZnO-NWs/ZnO/glass substrate contains two phases. Evaluation of diffusion coefficient for BSA into PBS filled APTES/ZnO-NWs/ZnO/ITO/glass was performed using numerical calculation, and the obtained diffusion coefficient was 2.4·10-17 m2/s. Simulation of BSA immobilization on flat ZnO layer and on ZnO-NWs modified surface showed that 13 times higher sensitivity for wavelength to refractive index change was observed for the substrate with ZnO-NWs

Total internal reflection ellipsometry for kinetics-based assessment of bovine serum albumin immobilization on ZnO nanowires

The properties of the ZnO-NWs were investigated by utilizing spectroscopic ellipsometry under TIRE configuration during real-time measurement of covalent BSA immobilization.</p