Brachial plexus injury is known to be one of the most serious upper limb injuries, causes paralysis of the upper limbs and changes in activity of daily living, with the consequence disruption of activity of daily living, socio-economic problems, depression, and hopelessness. Management must be done properly. The evaluation and examination consist of detailed anamnesis on chronological events, complete physical examination, imaging studies, and electrophysiology study. Management can be done nonsurgically and surgically. Knowledge of the history of injury, timing of surgery, priority in restoring function, and managing patient expectations are important concepts in treating patient with brachial plexus injury. Timing is a very important thing. The results of these interventions vary depending on several parameters. Recognizing the basic principles of managing brachial plexus injuries is indispensable for all clinicians who treat these injuries.
The demand for catalysts that are highly active and stable for electron-transfer reactions has been boosted by the discovery that [Pt(NH3)4](TCNQF4)2 (TCNQF4 = 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane) is an efficient catalyst. In this work, we prepare and characterize the two related [Pt(NH3)4]2+ complexes, [Pt(NH3)4](TCNQ)2·(DMF)2 (1) and [Pt(NH3)4](TCNQ)2 (2). Reaction of [Pt(NH3)4](NO3)2 with LiTCNQ in a mixed solvent (methanol/dimethylformamide, 4 : 1 v/v) gives [Pt(NH3)4](TCNQ)2·(DMF)2 (1), whereas the same reaction in water affords [Pt(NH3)4](TCNQ)2 (2). 2 has been previously reported. Both 1 and 2 have now been characterized by single-crystal X-ray crystallography, Fourier-transform (FT)IR, Raman and UV-vis spectroscopy, and electrochemistry. Structurally, in 1, the TCNQ1− anions form infinite stacks with a separation between adjacent anions within the stack alternating between 3.12 and 3.42 Å. The solvated structure 1 differs from the non-solvated form 2 in that pairs of TCNQ1− anions are clearly displaced from each other. The conductivities of pressed pellets of 1 and 2 are both in the semi-conducting range at room temperature. 2 can be electrochemically synthesized by reduction of a TCNQ-modified electrode in contact with an aqueous solution of [Pt(NH3)4](NO3)2 via a nucleation growth mechanism. Interestingly, we discovered that 1 and 2 are not catalysts for the ferricyanide and thiosulfate reaction. Li+ and tetraalkylammonium salts of TCNQ1−/2− and TCNQF41−/2− were tested for potential catalytic activity towards ferricyanide and thiosulfate. Only TCNQF41−/2− salts were active, suggesting that the dianion redox level needs to be accessible for efficient catalytic activity and explaining why 1 and 2 are not good catalysts. Importantly, the origin of the catalytic activity of the highly active [Pt(NH3)4](TCNQF4)2 catalyst is now understood, enabling other families of catalysts to be developed for important electron-transfer reactions.
A review of the existing literature, related to treatment options and management principles of pilon fractures, was performed, and its results are presented. Pilon fractures have a very diverse pattern, but there are general characteristics to help diagnose and plan therapy. The choice of therapy is highly dependent on the surrounding soft-tissue environment. Different methods of treatment, lack of standard management protocols, and the high risk of complications make this injury one of the biggest challenges that an orthopedic surgeon can face. This review focuses on the general aspects of the pilon fracture management as well as its complications and possible solutions.
Introduction: Coronavirus disease (COVID-19) pandemic caused by the severe acute respiratory syndrome coronavirus (SARS Cov-2) has made a huge impact on global health service including in orthopaedic surgical service. Knee surgery (including arthroscopy) is one of the emerging surgical services in Indonesia. As the pandemic goes on, some of the patients prefer to postpone or cancel the surgery planning. We tried to evaluate the epidemiology of knee arthroscopy procedure during Covid-19 pandemic at our institution. Material and methods: Retrospective data collection was performed on all patients who received knee arthroscopy procedure at Prof dr. R. Soeharso Orthopaedic Hospital, Surakarta, Indonesia during the year 2020. The study evaluated the demographic data, the indication of surgery, and trends of the number of surgeries according to period time. This study also compared the data of knee arthroscopy procedures performed during the corresponding period before the pandemic in Indonesia (January to December 2019). Results: There was a total of 88 knee arthroscopy surgery performed during the period January to December 2020. There was a decrease in the number of knee arthroscopy during April and May 2020. The decreasing number of surgeries also occurred in November 2020 which was later followed by the increasing number of surgeries in December 2020. Among all patient received knee arthroscopy during 2020, none have post-operative complication or infection due to SARS Cov-2. Conclusion: There was some difference in the epidemiology of knee arthroscopy during the COVID-19 pandemic compared to the non-pandemic era. Comprehensive preoperative screening is needed before resume elective surgical service.
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