EVALUATION OF BONE BIOMECHANICAL PROPERTIES IN DIFFERENT REGIONS OF THE EQUINE THIRD METACARPUS

2012 ◽  
Vol 15 (03) ◽  
pp. 1250017
Author(s):  
Rodrigo Crispim Moreira ◽  
Cesar Augusto Martins Pereira ◽  
Paulo José Riccio Frazão ◽  
Mariana Baroni Selim ◽  
Luis Cláudio Lopes Correia da Silva ◽  
...  
Keyword(s):  
Bone Density ◽  
Modulus Of Elasticity ◽  
Test Specimen ◽  
Standardized Test ◽  
Biomechanical Properties ◽  
Metacarpal Bone ◽  
High Positive Correlation ◽  
The Third ◽  
Specimen Density ◽  
Compressive Testing

Purpose: To compare biomechanical characteristics at different regions of the equine third metacarpal bone using standardized test specimens. Methods: Standardized test specimens were made from samples collected from each third metacarpal bone. Cortical bone samples were collected from the lateral (ts4L) and medial (ts4M) cortices of the mid-diaphysis and trabecular bone samples were collected from the distal (ts3) and proximal (ts2) epiphyses. A sample corresponding to the mid third of the third metacarpal bone was also collected (ts1). Test specimens were submitted to compressive testing for determination and comparison of biomechanical properties. Results: Stress and modulus of elasticity of ts4L and ts4M did not differ at the time of fracture. However, the modulus of elasticity of ts4L and ts4M differed from ts1. Maximum tension and modulus of elasticity differed between ts2 and ts3. A medium to high positive correlation between test specimen density and bone biomechanical properties was observed. Conclusion: The lateral and medial cortices of the equine third metacarpal bone have similar biomechanical characteristics. The proximal and distal epiphyses of the equine third metacarpal bone have different biomechanical properties that are correlated with bone density in these regions.

Stress fracture of the palmar, distal cortex of the third metacarpal bone: A diagnostic challenge with a good prognosis

2021 ◽  
Author(s):  
Ran Shan ◽  
Anna S. Johnston ◽  
Sarah M. Rosanowski ◽  
John O'Shea ◽  
Christopher M. Riggs
Keyword(s):  
Stress Fracture ◽  
Good Prognosis ◽  
Metacarpal Bone ◽  
Diagnostic Challenge ◽  
The Third

CORRELATION STUDY BETWEEN BONE MINERAL DENSITY DETERMINED BY RADIOGRAPHIC ABSORPTIOMETRY AND BONE RESISTANCE OF EQUINE THIRD METACARPAL BONE SUBMITTED TO BIOMECHANICAL TESTING

2012 ◽  
Vol 15 (01) ◽  
pp. 1250007
Author(s):  
Paulo J R Frazao ◽  
Rodrigo Crispim ◽  
Cesar A M Pereira ◽  
Mariana B Selim ◽  
Lara L Facó ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Biomechanical Testing ◽  
Biomechanical Properties ◽  
Correlation Study ◽  
Metacarpal Bone ◽  
Mineral Density ◽  
Radiographic Absorptiometry ◽  
Study Bone Mineral Density ◽  
Significant Linear Correlation

Knowledge about non-invasive methods for early diagnostics in equine orthopedic disorders is economically important and has been widely studied. In this study, bone mineral density determined by radiographic absorptiometry was correlated to bone resistance of the equine third metacarpal bone submitted to biomechanical testing. Thirty pairs of third metacarpal bone of adult horses were collected, dissected, radiographed, analyzed by the radiographic absorptiometry technique, and submitted to tomographic study and biomechanical testing. No significant linear correlation between radiographic bone density values and measured biomechanical properties was observed. Therefore, bone mineral density of the third metacarpal bone determined by radiographic absorptiometry does not predict bone capacity to resist compression and flexion loads. Further studies should be developed to establish which techniques are reliably capable of giving such predictive information.

COMPARISON OF GROSS AND HISTOPATHOLOGIC FINDINGS WITH QUANTITATIVE COMPUTED TOMOGRAPHIC BONE DENSITY IN THE DISTAL THIRD METACARPAL BONE OF RACEHORSES

2007 ◽  
Vol 48 (6) ◽  
pp. 518-527 ◽  
Author(s):  
MARTHA G. DRUM ◽  
CHRISTOPHER E. KAWCAK ◽  
ROBERT W. NORRDIN ◽  
RICHARD D. PARK ◽  
C. WAYNE McILWRAITH ◽  
...  
Keyword(s):  
Bone Density ◽  
Metacarpal Bone ◽  
Computed Tomographic ◽  
Histopathologic Findings

In vitro assessment of the motion of equine proximal sesamoid bones relative to the third metacarpal bone under physiologic midstance loads

2021 ◽  
Vol 82 (3) ◽  
pp. 198-206
Author(s):  
Sarah K. Shaffer ◽  
Natalia Sachs ◽  
Tanya C. Garcia ◽  
David P. Fyhrie ◽  
Susan M. Stover
Keyword(s):  
Metacarpal Bone ◽  
The Third ◽  
Sesamoid Bones ◽  
In Vitro Assessment

scholarly journals Supplementation with Bovine Milk or Soy Beverages Recovers Bone Mineralization in Young Growing Rats Fed an Insufficient Diet, in Contrast to an Almond Beverage

2019 ◽  
Vol 3 (11) ◽  
Author(s):  
Julie A Cakebread ◽  
Olivia A M Wallace ◽  
Marlena C Kruger ◽  
Mark H Vickers ◽  
Alison J Hodgkinson
Keyword(s):  
Amino Acids ◽  
Bone Density ◽  
Bone Mineralization ◽  
Bovine Milk ◽  
Biomechanical Properties ◽  
Intact Protein ◽  
Sprague Dawley ◽  
Uht Milk ◽  
Growing Rats ◽  
Sustainable Products

ABSTRACT Background Nondairy beverages, produced from soy, rice, oat, almond, or coconut, are increasingly being used as alternatives to dairy milk, with the perception that they are healthier and/or more sustainable products than dairy products. Objective The aim of this study was to compare the effects of supplementing either bovine milk, soy, or almond-based beverages to young, growing rats fed an intact-protein diet or a diet that had protein substituted with amino acids (AA-diet). Methods Three-week-old male Sprague-Dawley rats were randomly assigned to 5 groups (n = 10/group) and fed ad libitum for 4 wk. Two control groups were fed either standard AIN-93G food [20% casein (CN) protein] or AIN-93G with amino acids (AAs) equivalent to CN protein, and water to drink. Three treatment groups were fed AIN-93G AA and supplemented with either bovine ultra-heat treatment (UHT) milk or soy or almond UHT beverages. Rat weight gain and food intakes were recorded. During week 4, body composition was assessed using DEXA to determine lean soft tissue, fat, and bone mass. At trial end, bone biomechanical properties and blood plasma mineral concentrations were measured. Results At the end of the trial, animals supplemented with almond beverage were lightest (P > 0.05), with higher plasma calcium concentrations (P > 0.05) and lower bone mineral content (BMC) and bone density (P > 0.05) than animals supplemented with milk or soy beverage. Soy-supplemented animals had similar BMC and bone density compared with milk-supplemented animals, although the soy group gained most weight (P > 0.05) and had the highest fat:lean ratio (P > 0.05) compared with other groups. Conclusions In the model tested, supplementing rats with bovine UHT milk and soy UHT beverage provided favorable bone health outcomes. Conversely, almond UHT beverage was not an effective supplement and could be detrimental to bone mineralization and strength outcomes.

scholarly journals The thermal and electrical conductivity of a single crystal of aluminium

1927 ◽  
Vol 115 (770) ◽  
pp. 236-241 ◽  
Keyword(s):  
Electrical Conductivity ◽  
Single Crystals ◽  
Test Specimen ◽  
Average Diameter ◽  
National Physical Laboratory ◽  
Present Communication ◽  
Uniform Size ◽  
The Third ◽  
Physical Laboratory

The recent work of Carpenter and Elam on the growth of single crystals of large dimensions has rendered possible the study of the physical constants of single crystals of the commoner metals, and the present communication describes the determination of the thermal and electrical conductivity of aluminium in the form of an isolated crystal. The form of the crystal investigated is shown in fig. 1. This crystal had been prepared at the National Physical Laboratory employing the technique described by Carpenter in “Nature,” p. 266, August 21, 1926, which briefly is as follows:— The test specimen is machined and subjected to three treatments, thermal, mechanical, and thermal. The first treatment is necessary to soften the metal completely and produce new equiaxed crystals of so far as possible uniform size, the average diameter being 1/150 inch. The second consists in straining these crystals to the required amount, and the third in heating the strained crystals to the requisite temperature, so that the potentiality of growth conferred by strain could be brought fully into operation.

Ipriflavone improves bone density and biomechanical properties of adult male rat bones

1995 ◽  
Vol 56 (3) ◽  
pp. 215-219 ◽  
Author(s):  
R. Civitelli ◽  
S. H. Abbasi-Jarhomi ◽  
L. R. Halstead ◽  
A. Dimarogonas
Keyword(s):  
Bone Density ◽  
Adult Male ◽  
Biomechanical Properties ◽  
Male Rat ◽  
Adult Male Rat

The stepped hybrid plate for carpal panarthrodesis

2009 ◽  
Vol 22 (05) ◽  
pp. 389-397 ◽  
Author(s):  
M. C. Díaz-Bertrana ◽  
F. Darnaculleta ◽  
J. Franch ◽  
J. L. Puchol ◽  
I. Durall
Keyword(s):  
Bone Tumour ◽  
Degenerative Joint Disease ◽  
Metacarpal Bone ◽  
Joint Disease ◽  
Incomplete Fusion ◽  
Carpal Bone ◽  
Low Grade ◽  
Screw Insertion ◽  
The Third ◽  
Metacarpal Bones

SummaryFifty-two carpal panarthrodeses (CP) were carried out in 44 dogs (eight bilateral), in a multicentre study using a single (n = 47) or double (n = 5) stepped hybrid CP plate. Of these 44 cases, 39 were between 20–55 kg in bodyweight , 26 were males , and the carpometacarpal was the most common joint involved. Falling and other impact trauma were the most common aetiology. Pain of unknown origin, carpal luxation, chronic accessory carpal bone fracture, distal comminuted intra-articular radial fracture, bone tumour, degenerative joint disease, canine erosive idiopathic polyarthritis, avascular necrosis of the radial carpal bone and fractures of several metacarpal bones were some of the pathologies reported. Fracture of the third metacarpal bone during screw insertion was the only intrasurgical complication. Malpositioning of the plate or screws and over-tightened screws were technical errors observed in seven of the procedures. The radial carpal bone was not fixed with a screw in two cases due to bone deformity. Concurrent plate breakage and bending in the same patient operated on bilaterally was observed during the follow-up period, which represented a major complication rate of 3.8% for all procedures. Minor complications were: low grade infection, lick granuloma, digit hyperextension, screw loosening or failure, incomplete fusion of some joints and a fracture of the third metacarpal bone at the distal screw hole of the plate; which represented a rate of 44.2% on all procedures. Complete carpal healing was observed radiographically in 94.2% of all procedures. Limb function was excellent to good, and all of the owners, except for one, were satisfied with the procedure.

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