98%
921
2 minutes
20
Bipolar hemiarthroplasty is frequently used in the treatment of intracapsular hip fractures. Dissociation of the bipolar components can happen during the hip dislocation, the reduction maneuvers, or spontaneously without any dislocation. Here we report early dissociation between bipolar components in two cases during the attempt of closed reduction maneuvers and three cases with spontaneous dissociation without any trauma. To prevent or minimize this complication; the reduction of dislocated hips must be achieved very gently under general anesthesia with fluoroscopic control. During the initial operation the surgeons must be sure that the bipolar components are locked to each other and after final reduction, especially in osteoarthritic acetabulums, that the cup position is not in varus position.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6197178 | PMC |
http://dx.doi.org/10.1016/j.aott.2016.12.007 | DOI Listing |
ACS Electrochem
September 2025
Department of Material Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.
Bipolar membranes (BPMs) are increasingly recognized as a promising electrolyte option for water electrolysis, attributable to their distinctive properties derived from the membrane's layered structure, which consists of an anion exchange (AEL) and a cation exchange layer (CEL). This study investigates four different BPMs and the influence they have on the performance of a water electrolysis cell under two different feed configurations: (1) a symmetric deionized water feed to both anode and cathode compartments and (2) an asymmetric feed with a 0.5 mol/L NaCl catholyte feed and a deionized water anolyte feed.
View Article and Find Full Text PDFPsychiatry Res
September 2025
Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan, PR China. Electronic address:
Background: Increasing studies indicate that dissociation symptoms (DS) are common in bipolar disorder (BD) patients, but little is known about it in Chinese patients. This study aimed to assess the prevalence and clinical correlates of DS in this population.
Methods: Patients diagnosed with BD were recruited between December 2021 and February 2024.
Nitrogenase (Nase) is a critical enzyme which catalyzes the reaction of N → NH in nature. Studies on the spectroscopy and photochemistry of -[Fe(DMeOPrPE)(N)H][BPh] (1) and its isotopologues (2-6) provide a possible first step to evaluate the geometries and properties of the real Nase-N structure(s). In this article, we have used FT-IR, FT-Raman, synchrotron-based nuclear resonant vibrational spectroscopy (NRVS) and DFT calculations to examine and assign the normal modes of these complexes.
View Article and Find Full Text PDFWater Res
July 2025
Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, Delft 2628 CN, the Netherlands.
Despite growing scientific interest in the past decade, bipolar membrane electrodialysis has seen limited advancement in controlled operation of water dissociation via the bipolar membrane (BPM). For nutrient recovery applications, such as ammonia (NH₃) extraction from anaerobic digestion reject water, implementing in-situ pH control in the base solution could enhance energy efficiency. By controlling the electric current, pH is regulated through OH⁻ generation from the bipolar membrane (BPM).
View Article and Find Full Text PDFNature
July 2025
Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, People's Republic of China.
Deuterated acids/bases are high-value bulk chemicals used for synthesizing deuterated pharmaceuticals, modifying optoelectronic materials and mediating hydrogen isotope exchange reactions. However, conventional synthesis methods require harsh reaction conditions with high energy consumption. Here we propose a versatile platform that takes advantage of heavy water dissociation in bipolar membranes (BPMs) to produce deuterated acids and bases under particularly mild conditions.
View Article and Find Full Text PDF