A Measurement of Proximal Femur Strain with Total Hip Arthroplasty

1980 ◽  
Vol 102 (3) ◽  
pp. 230-233 ◽  
Author(s):  
R. D. Crowninshield ◽  
D. R. Pedersen ◽  
R. A. Brand
Keyword(s):  
Stainless Steel ◽  
Elastic Modulus ◽  
Femoral Component ◽  
Proximal Femur ◽  
Strain Measurement ◽  
Strain State ◽  
Total Hip ◽  
Before And After ◽  
Component Loosening

Strain measurement was performed on loaded fresh human cadaveric proximal femurs before and after total hip femoral component implantation. Changes in the femurs’ strain state associated with loading through stainless steel and titanium femoral components were recorded. The role of proximal femur remodeling in femoral component loosening is discussed along with the likely effect of femoral component elastic modulus on the remodeling process.

Femoral Anteversion and Restricted Range of Motion in Total Hip Prostheses

1988 ◽  
Vol 29 (5) ◽  
pp. 551-553 ◽  
Author(s):  
K. Herrlin ◽  
H. Pettersson ◽  
G. Selvik ◽  
L. Lidgren
Keyword(s):  
Range Of Motion ◽  
Femoral Component ◽  
Hip Prosthesis ◽  
Femoral Anteversion ◽  
Restricted Range ◽  
Total Hip Prosthesis ◽  
Hip Prostheses ◽  
Total Hip ◽  
Total Hip Prostheses

Impingement of the neck of the stem on to the rim of the socket may cause dislocation of the total hip prosthesis. The role of femoral anteversion in the occurrence of such impingement was analyzed in a clinical material of total hip prostheses with and without dislocation. A low femoral anteversion was linked to a clinically relevant reduction of the range of motion due to impingement and dominated in the group with dislocations. Impingement is minimized by inserting the femoral component in 10° to 20° of anteversion.

Mechanism Analysis and Dairy Filtration Experimental Research on Porous 1Cr18Ni9 Stainless Steel Components

2013 ◽  
Vol 668 ◽  
pp. 902-906
Author(s):  
Xiu Ping Dong ◽  
Ya Ting Huang ◽  
Ming Ji Huang
Keyword(s):  
Stainless Steel ◽  
Porous Material ◽  
Three Dimensional ◽  
Porous Metal ◽  
Chocolate Milk ◽  
Mechanism Analysis ◽  
Steel Wires ◽  
Before And After ◽  
Filtering Efficiency

Cool-drawn 1Cr18Ni9 stainless steel wires of 0.1~0.5 mm can be woven and punched to prepare porous metal filters. There is certain amount of connected micron pores in the transformable components. Filtration mechanism of this porous material is investigated and three series of samples with different diameter of wires, porosities and filtrating ranges are prepared. Filtration performances compares experiments are carried out on a kind of chocolate milk with the brand of Sanyuan. Three-dimensional microscopy, KEYENCE VHX-600, is applied to investigate the diaphragms before and after filtrating. Portable contamination analysis kit, HPCA-2, is chosen to identify the degree of contaminating. Results indicate that these kind of porous metal filters have valid solid/fluid separating effects. Wires diameters and other preparation parameters will identify the porosity. Thinner wires contribute to more and tinier porous and will block particles effectively. Thickness of filters plays the similar role of filtration layer. Higher porosity will increase the cleanliness of the passing fluid and decrease the filtering efficiency. The data in this paper provide technical support to the application in dairy filtration industry.

FEMORAL COMPONENT LOOSENING AFTER TOTAL HIP REPLACEMENT

1980 ◽  
pp. 346-349
Author(s):  
E.L. Radin ◽  
C.T. Rubin ◽  
L.E. Lanyon ◽  
E.L. Thrasher ◽  
A.M. Crugnola ◽  
...  
Keyword(s):  
Femoral Component ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Total Hip ◽  
Component Loosening

Early femoral component loosening in DF-80 total hip arthroplasty

1989 ◽  
Vol 4 (1) ◽  
pp. 55-64 ◽  
Author(s):  
Raymond P. Robinson ◽  
Timothy P. Lovell ◽  
Thomas M. Green ◽  
Gloria A. Bailey
Keyword(s):  
Total Hip Arthroplasty ◽  
Femoral Component ◽  
Hip Arthroplasty ◽  
Total Hip ◽  
Component Loosening

Child and Adolescent Suicides in Bosnia and Herzegovina Before and After the War (1992–1995)

Crisis ◽  
2010 ◽  
Vol 31 (3) ◽  
pp. 160-164 ◽  
Author(s):  
Almir Fajkic ◽  
Orhan Lepara ◽  
Martin Voracek ◽  
Nestor D. Kapusta ◽  
Thomas Niederkrotenthaler ◽  
...  
Keyword(s):  
Bosnia And Herzegovina ◽  
Age Differences ◽  
Suicide Risk ◽  
Child And Adolescent ◽  
Youth Suicide ◽  
Southeastern Europe ◽  
Suicide Rates ◽  
Before And After ◽  
Sex And Age Differences

Background: Evidence on youth suicides from Southeastern Europe is scarce. We are not aware of previous reports from Bosnia and Herzegovina, which experienced war from 1992 to 1995. Durkheim’s theory of suicide predicts decreased suicide rates in wartime and increased rates afterward. Aims: To compare child and adolescent suicides in Bosnia and Herzegovina before and after the war. Methods: Data on youth suicide for prewar (1986–90) and postwar (2002–06) periods were analyzed with respect to prevalence, sex and age differences, and suicide methods. Suicide data from 1991 through 2001 were not available. Results: Overall youth suicide rates were one-third lower in the postwar than in the prewar period. This effect was most pronounced for girls, whose postwar suicide rates almost halved, and for 15–19-year-old boys, whose rates decreased by about a one-fourth. Suicides increased among boys aged 14 or younger. Firearm suicides almost doubled proportionally and were the predominant postwar method, while the most common prewar method had been hanging. Conclusions: The findings from this study indicate the need for public education in Bosnia and Herzegovina on the role of firearm accessibility in youth suicide and for instructions on safe storage in households. Moreover, raising societal awareness about suicide risk factors and suicide prevention is needed.

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