scholarly journals Microindentation for in vivo measurement of bone tissue mechanical properties in humans

2010 ◽  
Vol 25 (8) ◽  
pp. 1877-1885 ◽  
Author(s):  
Adolfo Diez-Perez ◽  
Roberto Güerri ◽  
Xavier Nogues ◽  
Enric Cáceres ◽  
Maria Jesus Peña ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bone Tissue ◽  
In Vivo Measurement

In Vivo Measurement of the Mechanical Properties of Bone Tissue. Preliminary Results

1983 ◽  
Vol 12 (1) ◽  
pp. 43-45 ◽  
Author(s):  
F Burny ◽  
O Saric ◽  
R Bourgois ◽  
M Donkerwolcke ◽  
Y Andrianne
Keyword(s):  
Mechanical Properties ◽  
Bone Tissue ◽  
Preliminary Report ◽  
Mechanical Characteristics ◽  
Maximum Torque ◽  
Preliminary Results ◽  
In Vivo Measurement

The paper is a preliminary report on the possibility of measuring the mechanical characteristics of the bone at the time of the anchorage of the osteosynthesis. The measurement of the maximum torque of a screw could be representative for the strength of the material.

In vivo measurement of the mechanical properties of bone tissue

1980 ◽  
Vol 13 (9) ◽  
pp. 796
Author(s):  
F. Burny ◽  
R. Bourgois ◽  
M. Donkerwolcke ◽  
O. Saric ◽  
J. Jedwab
Keyword(s):  
Mechanical Properties ◽  
Bone Tissue ◽  
In Vivo Measurement

Gender-specific in vivo measurement of the structural and mechanical properties of the human patellar tendon

2007 ◽  
Vol 25 (12) ◽  
pp. 1635-1642 ◽  
Author(s):  
Gladys N.L. Onambélé ◽  
Katherine Burgess ◽  
Stephen J. Pearson
Keyword(s):  
Mechanical Properties ◽  
Patellar Tendon ◽  
In Vivo Measurement ◽  
Gender Specific

Development of novel techniques in vivo measurement of mechanical properties of periodontal ligament

2006 ◽  
Vol 39 ◽  
pp. S201-S202 ◽  
Author(s):  
H. Liu ◽  
S.L. Evans ◽  
C. Holt ◽  
A. Zhurov ◽  
J. Middleton ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Periodontal Ligament ◽  
In Vivo Measurement

Noncontact Determination of the Mechanical Properties of the Human Vocal Folds

2008 ◽  
Author(s):  
Shinji Deguchi ◽  
Kazutaka Kawashima
Keyword(s):  
Mechanical Properties ◽  
Vocal Fold ◽  
Measurement Techniques ◽  
Voice Quality ◽  
Vocal Folds ◽  
In Vivo Measurement ◽  
In Vitro Measurements ◽  
Excited Oscillation

Mechanical properties of the vocal folds (such as stiffness or viscoelastic properties) play an essential role in phonation. They affect not only voice quality but also onset threshold of vocal fold self-excited oscillation, a sound source of voice [1]. Many experimental data on the mechanical properties have been reported so far, in which in vitro [2] or in vivo measurement techniques [3] were employed. In vitro measurements give us detailed information on the mechanical properties, yet it would be required to consider possible loss of freshness of the specimen. Meanwhile, current in vivo measurement methods utilize a thin probe to deform the vocal fold tissue located at the back of the throat and hence need technical skills for the surveyor to successfully obtain its loading-deformation relationship.

Nanoindentation of Bone in a Physiological Environment

2004 ◽  
Vol 844 ◽  
Author(s):  
R. Akhtar ◽  
S. Morse ◽  
P.M. Mummery
Keyword(s):  
Mechanical Properties ◽  
Bone Tissue ◽  
Body Fluid ◽  
Room Temperature ◽  
Control Unit ◽  
Bovine Bone ◽  
Physiological Conditions ◽  
Temperature Control Unit ◽  
Liquid Cell

ABSTRACTNanoindentation has been established as an effective method to measure the mechanical properties of bone tissue at the micron and sub-micron length scale. Although it is well-documented that the mechanical properties of macroscopic bone specimens vary depending on whether the samples are tested dry or wet, nanoindentation is generally conducted on dehydrated bone tissue at room temperature, primarily because nanoindentation systems are extremely sensitive to changes in environmental conditions such as humidity and temperature. In this study, these problems were overcome by using a specially constructed liquid cell with an extension piece that allowed the indenter tip to be submerged under 5 mm of liquid. The custom setup was used to test cortical bovine bone and cancellous human bone specimens in three distinct conditions – dehydrated, rehydrated in simulated body fluid (SBF) at 20°C, and rehydrated in SBF at 37.5°C. A heating element with a temperature control unit was used to test at 37.5°C. The hardness and elastic modulus of the bone samples were found to decrease when dry specimens were rehydrated and tested in physiological conditions. It is suggested that nanoindentation in physiological conditions gives a better estimate of the mechanical properties of the microstructural components of bone in vivo rather than nanoindentation under conventional conditions.

scholarly journals Microindentation for in vivo measurement of bone tissue material properties in atypical femoral fracture patients and controls

2012 ◽  
Vol 28 (1) ◽  
pp. 162-168 ◽  
Author(s):  
Roberto C Güerri-Fernández ◽  
Xavier Nogués ◽  
José M Quesada Gómez ◽  
Elisa Torres del Pliego ◽  
Lluís Puig ◽  
...  
Keyword(s):  
Bone Tissue ◽  
Material Properties ◽  
Femoral Fracture ◽  
Atypical Femoral Fracture ◽  
In Vivo Measurement ◽  
Tissue Material

Nanoindentation of Bone in a Physiological Environment

2004 ◽  
Vol 841 ◽  
Author(s):  
R. Akhtar ◽  
S. Morse ◽  
P. M. Mummery
Keyword(s):  
Mechanical Properties ◽  
Bone Tissue ◽  
Body Fluid ◽  
Room Temperature ◽  
Control Unit ◽  
Bovine Bone ◽  
Physiological Conditions ◽  
Temperature Control Unit ◽  
Liquid Cell

ABSTRACTNanoindentation has been established as an effective method to measure the mechanical properties of bone tissue at the micron and sub-micron length scale. Although it is well-documented that the mechanical properties of macroscopic bone specimens vary depending on whether the samples are tested dry or wet, nanoindentation is generally conducted on dehydrated bone tissue at room temperature, primarily because nanoindentation systems are extremely sensitive to changes in environmental conditions such as humidity and temperature. In this study, these problems were overcome by using a specially constructed liquid cell with an extension piece that allowed the indenter tip to be submerged under 5 mm of liquid. The custom setup was used to test cortical bovine bone and cancellous human bone specimens in three distinct conditions – dehydrated, rehydrated in simulated body fluid (SBF) at 20°C, and rehydrated in SBF at 37.5°C. A heating element with a temperature control unit was used to test at 37.5°C. The hardness and elastic modulus of the bone samples were found to decrease when dry specimens were rehydrated and tested in physiological conditions. It is suggested that nanoindentation in physiological conditions gives a better estimate of the mechanical properties of the microstructural components of bone in vivo rather than nanoindentation under conventional conditions.

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