scholarly journals A technique for the extraction of the Proximal Femoral Nail Anti-rotation (PFNA) after unlocking failure

2020 ◽  
Author(s):  
Mingde Cao ◽  
Zhong-Meng Yang ◽  
Hua-Ding Lu
Keyword(s):  
Distal Part ◽  
Simple Technique ◽  
Steel Wire ◽  
Cost Effective ◽  
Technical Note ◽  
Proximal Femoral Nail ◽  
Routine Method ◽  
Femoral Nail ◽  
Cost Effective Method ◽  
The Subject

Abstract Introduction Proximal Femoral Nail Anti-rotation (PFNA) is a routine method to deal with intertrochanteric fractures in the elder population. It is extremely difficult to remove PFNA in some cases as a result of stripping of blade heads. In this Technical Note, we report a simple technique using commonly available instrument that can be used to remove stripped even broken anti-rotation blade where regular methods have failed. Methods The subject underwent a PFNA removal surgery fifteen months after the previous fixation. We encountered difficulties using regular instrument to remove the anti-rotation blade. A 5mm tungsten carbide bur was used to drill a single cortical hole at the end of the blade. Then double-strand steel wire was threaded through the hole and the distal part was shaped into a circle which could tie to the extraction screw. Slide Hammer was applied to gently knocked out the blade along the anatomical direction of the femoral neck. Results The technique helped us successfully remove the dispatched anti-rotation blade and provided the patient with a satisfactory result. Conclusion The use of a tungsten reamer and steel wire loop to remove the proximal femoral anti-rotation blade may provide a simple and cost-effective method of dealing with extraction failure.

scholarly journals Technical note: A new and cost-effective method for detection of the bovine acyl-CoA:diacylglycerol acyltransferase 1 K232A polymorphism in cattle

2009 ◽  
Vol 92 (2) ◽  
pp. 773-776 ◽  
Author(s):  
R.S. Steinberg ◽  
L. Pereira ◽  
G.A. Lacorte ◽  
M.G.C.D. Peixoto ◽  
R.S. Verneque ◽  
...  
Keyword(s):  
Cost Effective ◽  
Technical Note ◽  
Cost Effective Method

Low cost Fenton's oxidative degradation of 4-nitroaniline using iron from laterite

2016 ◽  
Vol 74 (8) ◽  
pp. 1919-1925 ◽  
Author(s):  
A. S. Amritha ◽  
B. Manu
Keyword(s):  
Low Cost ◽  
Oxidative Degradation ◽  
Cost Effective ◽  
Fenton’S Oxidation ◽  
Cost Effective Method ◽  
Optimum Ph ◽  
The Subject ◽  
The Cost ◽  
Fenton's Oxidation ◽  
Maximum Removal

The present study aims to establish the use of iron (Fe) from larerite in the case of Fenton's oxidation process which is a simple and cost-effective method for degradation of nitro compounds in effluents and in surface or ground water. 4-nitroaniline (4-NA) degradation by Fenton's oxidation method is the subject of the present study so as to optimize pH, hydrogen peroxide/iron (H/F) ratio at different initial concentrations of 4-NA. The optimum pH obtained was 3. The present study has also established optimum H/F ratio for the different initial concentrations of 4-NA for both conventional and use of Fe from laterite. The maximum removal efficiency of 99.84% was obtained for an H/F ratio of 100 for 0.5 mM initial concentration of 4-NA. The study establishes the use of Fe extracted from locally available laterite soil (LS) as a replacement of Fe salts so as to reduce the cost of the process.

Alternative cost-effective method to record 3D intra-operative images: A technical note

2014 ◽  
Vol 28 (6) ◽  
pp. 819-820 ◽  
Author(s):  
Damiano Giuseppe Barone ◽  
Vin Shen Ban ◽  
Ramez W Kirollos ◽  
Rikin A. Trivedi ◽  
Diederik O. Bulters ◽  
...  
Keyword(s):  
Cost Effective ◽  
Technical Note ◽  
Cost Effective Method

scholarly journals Internet-of-Things-Based Geotechnical Monitoring Boosted by Satellite InSAR Data

2021 ◽  
Vol 13 (14) ◽  
pp. 2757
Author(s):  
Denis Guilhot ◽  
Toni Martinez del Hoyo ◽  
Andrea Bartoli ◽  
Pooja Ramakrishnan ◽  
Gijs Leemans ◽  
...  
Keyword(s):  
Urban Areas ◽  
Slope Failure ◽  
Significant Risk ◽  
Surface Displacement ◽  
Cost Effective ◽  
Technical Note ◽  
Data Sets ◽  
Geotechnical Monitoring ◽  
Cost Effective Method ◽  
In Situ Sensors

Landslides, often a side effect of mining activities, pose a significant risk to humans and infrastructures such as urban areas, power lines, and dams. Operational ground motion monitoring can help detect the spatial pattern of surface changes and their evolution over time. In this technical note, a commercial, cost-effective method combining a network of geotechnical surface sensors with the InSAR data was reported for the first time to accurately monitor surface displacement. The correlation of both data sets is demonstrated in the Gediminas Castle testbed, where slope failure events were detected. Two specific events were analyzed, and possible causes proposed. The combination of techniques allows one to detect the precursors of the events and characterize the consequences of the failures in different areas in proximity to the castle walls, since the solution allows for the confirmation of long-term drifts and sudden movements in real time. The data from the in situ sensors were also used to refine the satellite data analysis. The results demonstrate that not all events pose a direct threat to the safety of the structure monitored.

Fabrication of Aluminum Interdigitated Electrode for Biosensor Application Using Conventional Lithography

2015 ◽  
Vol 1109 ◽  
pp. 118-122 ◽  
Author(s):  
M.A. Farehanim ◽  
U. Hashim ◽  
Norhayati Soin ◽  
A.H. Azman ◽  
S. Norhafizah ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Simple Technique ◽  
Cost Effective ◽  
Top Down ◽  
Interdigitated Electrode ◽  
Lithography Process ◽  
Aluminum Metal ◽  
Cost Effective Method ◽  
Biosensor Application ◽  
Chrome Mask

A simple technique for the fabrication of interdigitated electrode (IDEs) using conventional lithography was presented. A top-down simple lithography approach was used to fabricate a set of Interdigitated electrodes were patterned with aluminum metal. Silicon dioxide serves to isolate the electrode from the substrate. A chrome mask was proposed to complete this work. In this work, the proposed method was experimentally demonstrated by fabricating the IDEs structure 4-5μm, approximately. The dimensions of structure were determined by using scanning electron microscopy (SEM). It is a simple, easy-to-use and cost effective method and does not require complicated micro-lithography process for fabricating desired microelectrode in reproducible approach.

The ball-less technique: A novel technique for the removal of a broken proximal femoral nail anti-rotation. A technical note

Injury ◽  
2020 ◽  
Vol 51 (6) ◽  
pp. 1397-1402
Author(s):  
Tan Peilin Cheryl Marise ◽  
Huang Yilun ◽  
Yeo Kuei Siong Andy ◽  
Chua Thai Chong David
Keyword(s):  
Technical Note ◽  
Proximal Femoral Nail ◽  
Novel Technique ◽  
Femoral Nail
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