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Functional and clinical outcome with modified lateral approach total hip arthroplasty in stiff hips with ankylosing spondylitis

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World Journal of Orthopedics 2022年第8期13卷 714-724页

作者： mathew Kiran Jacob Pavan Kumar Reddy Roncy Savio Kuruvilla Chandy Viruthapadavil John pradeep mathew Poonnoose Anil Thomas Oommen Unit 2 Department of OrthopaedicsChristian Medical College HospitalVellore 632004India

BACKGROUND Ankylosing spondylitis at total hip arthroplasty(THA)has significant hip stiffness with flexion deformity,restricted mobility,and *** of movement(ROM)improvement with good functional outcome is seen following THA in these *** modified Hardinge approach without abductor compromise is helpful in these stiff hips with associated flexion *** To assess improvement in ROM and functional outcomes with a modified lateral approach THA in ankylosing spondylitis with stiff *** A total of 69 hips that underwent THA with a modified Hardinge approach in 40 patients were evaluated at a mean follow-up of 38.33 *** individuals ambulated with weight-bearing as tolerated and ROM exercises from the 1st postoperative *** Harris hip score and ROM were assessed during *** of life assessments using the 36-item and 12-item short form health surveys were done along with clinical and functional outcomes at *** 22.0 was used for statistical *** correlation of ROM and functional score change was performed using Pearson’s correlation *** Sixty-nine hips with a significant decrease in ROM preoperatively with 32 clinically fused hips showed significant improvement in flexion *** mean flexion in 69 hips improved from 29.35±31.38 degrees to 102.17±10.48 *** mean difference of 72.82 with a P value<0.0001 was *** total,45 out of 69 hips had flexion deformity,with 13 hips having a deformity above 30 *** flexion during the follow-up was below 90 degrees in 3 *** hips had flexion of 90 degrees at follow-up,while the remaining 55 hips had flexion above 100 *** Harris hip score improved from 17.03±6.02 to 90.66±7.23(P value<0.0001).The 36-item short form health survey at the follow-up indicated health status in 40 patients as excellent in 11,very good in 20,good in 5,fair in 3,and poor in *** mean mental health score was 84.10±*** relief w

关键词： Ankylosing Spondylitis Stiff flexion deformity Harris hip score Hip range of movement 36-item short form health survey score Total hip arthroplasty modified Hardinge approach

Influence of La3+ ion in the yttria matrix in improving the microhardness of infrared transparent nano LaxY2-xO3 sintered via hybrid heating

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Journal of Advanced Ceramics 2017年第3期6卷 240-250页

作者： Jijimon K. THOMAS mathew C. T. Jacob koshy Sam SOLOMON Electronic Materials Research Laboratory Department of Physics Mar Ivanios College Thiruvananthapuram 695015 Kerala India

In the present work, hybrid sintering technique which couples the resistive heating and microwave heating is employed to sinter infrared transparent La0.15Y1.85O3 to 99.2% of the theoretical density for the first time to the best of our knowledge. The presence of La3+ in the yttria matrix improves the hardness properties to a greater extent without affecting the transmittance properties, but there is a deterioration in the thermal properties of the sample. So we have limited our studies to La0.15Y1.85O3 which shows better optical, thermal, and hardness properties. The pellets fabricated from the ultra-fine nano powder with average particle size of ~12 nm synthesized by combustion technique and sintered at 1430 °C with an average grain size of 0.22 μm show ~80.1% transmittance in the UV–visible region and 81% in mid infrared region. For a comparative study of the optical, mechanical, and thermal properties, two other variants of sintering strategies namely conventional sintering and microwave sintering are also employed. A comprehensive analysis on the hardness reveals that the hardness of the pellets sintered via hybrid heating is 9.73 GPa and is superior to the pellets sintered using the other two techniques. The thermal conductivity of the sample is also analyzed in detail. The results clearly indicate that the La0.15Y1.85O3 ultra-fine nano powder synthesised by the single-step combustion method and sintered via microwave hybrid heating shows better transmittance properties without compromising the mechanical properties, and can be used very effectively for the fabrication of infrared transparent windows and domes.

关键词： La 3+ concentration microhardness hybrid sintering infrared transparent ceramics thermal conductivity

A characteristic study of humic acids isolated from Arctic fjord sediments

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Advances in Polar Science 2019年第1期30卷 24-34页

作者： Jennees mathew Aswathy SHAJI Anu GOPINATH Kottekkattu Padinchati KRISHNAN Sanil Vadakkan LOUIS Anoop Pullarkkat pradeep School of Ocean Science and Technology Kerala University of Fisheries and Ocean Studies National Centre for Antarctic and Ocean Studies Department of Chemistry St.Albert's College

Humic substances are ubiquitous natural materials found in sediments as a product of biochemical transformation reactions representing a significant proportion of organic carbon cycle on earth. This study involves the analysis of humic substances with special emphasis on humic acids(HAs) in sediments collected from the Kongsfjorden System of Arctic region in June, 2017. The characterization of the isolated HAs were done using various spectroscopic techniques viz. UV-visible, Fluorescence, FTIR and NMR. Isolated HAs were also undergone for elemental analysis along with other characterization. The UV spectral analysis results with a lower E4/E6 ratio suggesting the presence of HAs with high degree of aromaticity and condensation. Indications for the presence of hydroxyl, methyl, methylene, carbonyl, carboxyl, phenol, alcohol and amide groups were obtained from the FTIR spectrums of HAs. NMR spectral characteristics also confirm the presence of OH group as well as the presence of CH protons adjacent to C=X, were X can be any electronegative element. This also confirms the presence of carbonyl group which is also evident in the FTIR spectral studies. Presence of aliphatic regions slightly more dominated with long chain and/or alicyclic moieties rather than methyl groups was also inferred from the results of NMR.

关键词： Kongsfjorden sediments humic acids

Performance of polymer/CdS organic-inorganic hybrid LEDs

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Optoelectronics Letters 2016年第2期12卷 110-114页

作者： C.pradeep S.mathew M.A.G.Namboothiry C.P.G.Vallabhan P.Radhakrishnan V.P.N.Nampoori International School of Photonics Cochin University of Science and Technology School of Physics Indian Institute of Science Education and Research Department of Optoelectronics University of Kerala

Organic-inorganic hybrid light emitting diodes(LEDs) were fabricated by incorporating cadmium sulphide(Cd S) nanoparticles in hole transporting layer and light emitting materials of a polymer LED. The Cd S nanoparticles with size of 10 nm were synthesized by precipitation technique. The LEDs incorporated with the Cd S nanoparticles show a reduction in turn on voltage and luminance. When the nanoparticles are incorporated in a suitable fluorene based light emitting polymer, the luminance is increased along with the decrease of turn on voltage.

关键词：有机-无机杂化发光二极管发光聚合物纳米颗粒 CD 性能空穴传输层硫化镉

Refractive index and temperature dependent displacements of resonant peaks of long period grating inscribed in hydrogen loaded SMF-28 fiber

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Optoelectronics Letters 2012年第2期8卷 101-104页

作者： T.M.Libish M.C.Bobby J.Linesh S.mathew C.pradeep V.P.N Nampoori P.Radhakrishnan International School of Photonics Cochin University of Science and Technology S.C.T.College of Engineering

In this paper, the effects of refractive index (RI) of surrounding medium and ambient temperature on the transmission characteristics of a long period grating (LPG) are experimentally analyzed. The spectral behavior of LPG is investigated when the ambient index is higher or lower than that of the cladding material. The results show that the refractive index sensitivity of lower order attenuation bands is very low compared with that of the highest order attenuation band. But in the case of temperature, the lower order attenuation bands of the LPG can also exhibit good sensitivity like the higher-order bands.

关键词：长周期光栅温度依赖折射率共振峰光纤加载位移实验分析

Expedited Discharge of Patients with Diabetic Ketoacidosis in an Emergency Department Short Stay Unit

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Open Journal of Internal Medicine 2019年第4期9卷 112-120页

作者： Parampil Thulasidharan Shibu Kandalam Salem Abo Salah Peter Alistair Cameron Jignesh Dhirajlal Trivedi Muhammed Kunhi Kayakool Shahsad Ramachan Parambath pradeep Radhakrishnan Joe Varghese mathew Jaseem Sirajudeen Department of General Internal Medicine Hamad General Hospital Doha Qatar Department of Epidemiology & Preventive Medicine Monash University Melbourne Australia

Aim: Review of presentation, management and outcome of patients admitted with Diabetic Ketoacidosis (DKA) to an emergency department short stay unit with expedited discharge. Methods: All admitted patients with a discharge diagnosis of “Diabetic Ketoacidosis”, were identified by the file auditing section in the Emergency Department. Data obtained from the medical records were collected using an explicit chart review from January 2012 to June 2013. Data included clinical monitoring, investigations performed, the type and amount of intravenous fluids given, the insulin regime, potassium supplementation and outcome. Results: Out of a total of 120 patients labelled as DKA or hyperglycaemia on arrival, hundred patients fulfilled the criteria for DKA. In the population studied the mean age was 25 years with a male predominance. Eighty-two patients suffered from Type 1 Diabetes Mellitus (T1DM) whilst eighteen patients had Type 2 Diabetes Mellitus (T2DM). Sixteen patients were newly diagnosed during the present admission. Seventy-six (76%) patients were on insulin. The insulin regimen and potassium supplementation were followed as per protocol in all patients. All the patients except one were given intravenous fluid according to protocol. Parameters were monitored adequately except fluid input and output monitoring. The median length of stay in the short stay unit was 1.5833 days. There was no return visit within one week of discharge. Conclusion: The median length of stay was short and there were no documented complications or deaths during the stay. There was poor compliance with documentation of fluid input and output. In this population, the short stay model of care appeared to be safe and efficient.

关键词： Diabetes Mellitus Diabetic Ketoacidosis DKA Audit Emergency Department Expedited Discharge Length of Stay