Surgeon accuracy in the selection of the flexion-extension axis of the elbow: An in vitro study

2006 ◽  
Vol 15 (4) ◽  
pp. 451-456 ◽  
Author(s):  
James R. Brownhill ◽  
Keizo Furukawa ◽  
Kenneth J. Faber ◽  
James A. Johnson ◽  
Graham J.W. King
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Flexion Extension ◽  
Extension Axis ◽  
Selection Of

scholarly journals A Guideline for the Selection of the Artificial Posterior Teeth. Consideration of the Basis of the in vitro Study.

1997 ◽  
Vol 41 (2) ◽  
pp. 335-346 ◽  
Author(s):  
Naoyuki Matsumoto ◽  
Fumiaki Kawano ◽  
Kan Nagao ◽  
Nozomu Tada
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Posterior Teeth ◽  
Selection Of

scholarly journals In vitro study of the trans-epithelial crossing of HIV-1 through the female genital mucosa and of the role of epithelial cells in the selection of CCR5-tropic virus

Retrovirology ◽  
2012 ◽  
Vol 9 (S1) ◽  
Author(s):  
R Terrasse ◽  
O Delezay ◽  
A Brunon-Gagneux ◽  
L Heyndrickx ◽  
H Hamzeh-Cognasse ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
In Vitro Study ◽  
Vitro Study ◽  
Genital Mucosa ◽  
Hiv 1 ◽  
Selection Of ◽  
Female Genital

scholarly journals Patellofemoral kinematics during knee flexion-extension: An in vitro study

2006 ◽  
Vol 24 (12) ◽  
pp. 2201-2211 ◽  
Author(s):  
Andrew A. Amis ◽  
Wongwit Senavongse ◽  
Anthony M. J. Bull
Keyword(s):  
Knee Flexion ◽  
In Vitro Study ◽  
Vitro Study ◽  
Flexion Extension ◽  
Patellofemoral Kinematics

Three-dimensional patellar motion at the natural knee during passive flexion/extension. An in vitro study

2009 ◽  
Vol 27 (11) ◽  
pp. 1426-1431 ◽  
Author(s):  
Claudio Belvedere ◽  
Alberto Leardini ◽  
Andrea Ensini ◽  
Luca Bianchi ◽  
Fabio Catani ◽  
...  
Keyword(s):  
Three Dimensional ◽  
In Vitro Study ◽  
Vitro Study ◽  
Flexion Extension ◽  
Passive Flexion

In Vitro Study of Percutaneous Aortic Valve Replacement: Selection of a Tissue Valve

2008 ◽  
Vol 23 (3) ◽  
pp. 234-238 ◽  
Author(s):  
Erwan M. Flecher ◽  
John W. Curry ◽  
Thomas M. Joudinaud ◽  
Hashim Saber ◽  
Jamie MacNett ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Valve Replacement ◽  
Valve Replacement ◽  
In Vitro Study ◽  
Vitro Study ◽  
Tissue Valve ◽  
Percutaneous Aortic Valve Replacement ◽  
Selection Of

scholarly journals Microscopic evaluation of implant platform adaptation with UCLA-type abutments: in vitro study

2017 ◽  
Vol 46 (1) ◽  
pp. 56-60
Author(s):  
Vinícius Anéas RODRIGUES ◽  
João Paulo Mendes TRIBST ◽  
Leandro Ruivo de SANTIS ◽  
Gabriela Nogueira de Melo NISHIOKA ◽  
Dimas Renó de LIMA ◽  
...  
Keyword(s):  
Standard Deviation ◽  
In Vitro Study ◽  
Vitro Study ◽  
Nickel Chromium ◽  
Microscopic Evaluation ◽  
Plastic Components ◽  
Selection Of

Abstract Introduction The fit between abutment and implant is crucial to determine the longevity of implant-supported prostheses and the maintenance of peri-implant bones. Objective To evaluate the vertical misfit between different abutments in order to provide information to assist abutment selection. Material and method UCLA components (N=40) with anti-rotational system were divided as follows: components usinated in titanium (n=10) and plastic components cast proportionally in titanium (n=10), nickel-chromium-titanium-molybdenum (n=10) and nickel-chromium (n=10) alloys. All components were submitted to stereomicroscope analysis and were randomly selected for characterization by SEM. Result Data were analyzed using mean and standard deviation and subjected to ANOVA-one way, where the groups proved to statistically different (p=<0.05), followed by Tukey’s test. Conclusion The selection of material influences the value of vertical misfit. The group machined in Ti showed the lowest value while the group cast in Ni Cr showed the highest value of vertical misfit.

Defining the Flexion-Extension Axis of the Ulna: Implications for Intra-Operative Elbow Alignment

2008 ◽  
Vol 131 (2) ◽  
Author(s):  
James R. Brownhill ◽  
Louis M. Ferreira ◽  
James E. Pichora ◽  
James A. Johnson ◽  
Graham J. W. King
Keyword(s):  
Imaging Techniques ◽  
In Vitro Study ◽  
Elbow Flexion ◽  
Tracking Systems ◽  
Optimal Method ◽  
Flexion Extension ◽  
Position And Orientation ◽  
The Relationship ◽  
Extension Axis

The increased utilization of total elbow replacements has resulted in a correspondingly increased number of failed implants requiring revision. The most common reason for revision is aseptic loosening of the ulnar component due to polyethylene induced osteolysis. Implant malalignment is thought to be an important cause of bearing wear and implant failure. The ulnar flexion axis can be used to accurately align the ulnar component of the elbow implant; however, the optimal method of determining this axis intra-operatively is unknown. This in vitro study determined the relationship amongst kinematically and anatomically defined ulnar flexion axes in an effort to improve the accuracy of ulnar component positioning. Five different techniques were used to determine the ulnar flexion axis in 12 cadaveric specimens, 3 kinematic and 2 anatomic. The techniques were compared with the screw displacement axis from simulated elbow flexion. An anatomic measurement technique using the guiding ridge of the greater sigmoid notch of the ulna and the radial head was found to most accurately replicate the position and orientation of the screw displacement axis of the elbow (p<0.05). Because an anatomically derived flexion axis can be determined using both pre-operative imaging techniques, as well as with intra-operative guides, it is more practical than kinematically derived techniques requiring tracking systems for clinical application and should provide reliable and consistent results.

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