Vertebral trabecular bone. Correlations between data derived from the Fourier spectrum and bone mass and bone mineral density

Bone ◽  
2007 ◽  
Vol 41 (6) ◽  
pp. S1
Author(s):  
R.C. Puche ◽  
A. Rigalli ◽  
H. Moreno ◽  
J.C. Miguel
Keyword(s):  
Bone Mineral Density ◽  
Bone Mass ◽  
Trabecular Bone ◽  
Bone Mineral ◽  
Fourier Spectrum ◽  
Mineral Density ◽  
Vertebral Trabecular Bone

scholarly journals Hubungan fraksi area trabekula anterior mandibula dengan kepadatan tulang lumbar spine untuk deteksi dini osteoporosis

2017 ◽  
Vol 3 (1) ◽  
pp. 43
Author(s):  
Sri Lestari ◽  
Rini Widyaningrum
Keyword(s):  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Bone Mass ◽  
Trabecular Bone ◽  
Bone Mineral ◽  
Mass Density ◽  
Area Fraction ◽  
Bone Mass Density ◽  
Mineral Density ◽  
Anterior Mandible

The relationship of anterior mandible trabecular area with bone mass density of lumbar spine for early detection of osteoporosis. Bone mineral density is an indicator of osteoporosis, including the bone mineral density of lumbar spine. The decrease of lumbar spine bone mass density will cause an alteration in another site, including the mandibular. The aim of this research is to determine the predictor of lumbar spine bone mineral density using trabecular bone image of anterior mandible on periapical radiographs. The research was conducted by extracting the area fraction at mandible trabecular bone using digital periapical radiograph from 25 subjects. Canny edge detection was used in digital image processing for each radiograph. The regions of interest were selected from the image obtained by canny edge detection, so that the area fraction could be measured. A linier regression test was applied to determine a relationship between the area fractions of mandible trabecular bone with the bone mineral density of lumbar spine. The result of linear regression test showed that the area fraction of mandible trabecular bone had a moderate negative correlation with bone mass density of lumbar spine (α = 0.046; R = -0.403). The direction of the correlation was negative (b = -0.145). The area fraction of mandible trabecular bone on periapical radiographs could be used as the predictor for bone mass density of lumbar spine.ABSTRAKKepadatan tulang merupakan indikator osteoporosis, salah satu diantaranya adalah kepadatan tulang pada lumbar spine. Penurunan kepadatan tulang pada lumbar spine mempengaruhi kondisi tulang lain, termasuk tulang rahang bawah (mandibula). Tujuan penelitian ini adalah untuk menentukan prediktor densitas mineral tulang menggunakan citra radiograf periapikal tulang trabekula pada regio anterior rahang bawah. Penelitian dilakukan dengan ekstraksi fraksi area tulang trabekula mandibula yang tercitrakan pada radiograf periapikal digital dari 25 subjek. Pengolahan citra digital pada radiograf periapikal dilakukan dengan menggunakan metode deteksi tepi canny terhadap masing-masing citra radiograf. Region of Interest diseleksi dari citra hasil deteksi canny, sehingga dapat dilakukan pengukuran fraksi area. Uji regresi linier dilakukan untuk mengetahui hubungan antara nilai fraksi area trabekula mandibula dengan tingkat kepadatan tulang pada lumbar spine. Hasil uji regresi linier menunjukkan bahwa nilai fraksi area trabekula mandibula berkorelasi negatif dengan kepadatan tulang dengan kekuatan sedang (α = 0,046; R = -0,403). Adapun arah korelasi antara nilai fraksi area trabekula mandibula dengan kepadatan tulang adalah negatif (b = -0,145). Fraksi area tulang trabekula pada citra radiograf periapikal dapat digunakan sebagai prediktor kepadatan tulang pada lumbar spine.

Effects of tower climbing exercise on bone mass, strength, and turnover in orchidectomized growing rats

2002 ◽  
Vol 93 (3) ◽  
pp. 1152-1158 ◽  
Author(s):  
Takuya Notomi ◽  
Yuichi Okazaki ◽  
Nobukazu Okimoto ◽  
Yuri Tanaka ◽  
Toshitaka Nakamura ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Formation ◽  
Bone Mass ◽  
Bone Mineral Content ◽  
Trabecular Bone ◽  
Bone Mineral ◽  
Mineral Content ◽  
Lumbar Vertebrae ◽  
Mineral Density ◽  
Sedentary Group

To determine the effects of a tower climbing exercise on mass, strength, and local turnover of bone, 70 9-wk-old Sprague-Dawley rats were assigned to seven groups: a baseline control and three groups of sham-operated sedentary, orchidectomized (ORX)-sedentary and ORX-exercise rats. Rats voluntarily climbed a 200-cm tower to drink water from a bottle set at the top. At 4 wk, the periosteal bone formation rate (BFR), moment of inertia, bone mineral content, bone mineral density, and bending load at the midfemur were maintained in ORX-exercise rats, whereas these parameters were reduced in ORX-sedentary rats. At 8 wk, the periosteal mineral apposition rate and BFR in ORX-exercise rats were significantly higher, whereas the parameters in ORX-sedentary rats did not differ compared with sham-sedentary rats. In ORX-exercise rats, the trabecular mineralizing surface, BFR, and bone volume of the lumbar vertebrae were maintained at the same levels as those in the sham-sedentary group, whereas the osteoclast surface decreased compared with the ORX-sedentary group. However, the climbing exercise did not affect bone mineral content, bone mineral density, or the compression load of the lumbar vertebrae. These results show that, in the midfemur, the voluntary climbing exercise maintained cortical bone mass and strength by stimulating periosteal bone formation and partially prevented ORX-induced trabecular bone loss, depressing the elevation of turnover. Interestingly, in ORX rats, the climbing exercise had the opposite effect on bone formation at the periosteal femoral cortical bone, where the exercise increased the bone formation compared with vertebral trabecular bone, where the exercise decreased it.

Predictions of Vertebral Strength From Quantitative Measures of the Intra-Vertebral Heterogeneity in Density

2008 ◽  
Author(s):  
Amira A. Hussein ◽  
Zachary D. Mason ◽  
Elise F. Morgan
Keyword(s):  
Bone Mineral Density ◽  
Fracture Risk ◽  
Trabecular Bone ◽  
Bone Tissue ◽  
Bone Mineral ◽  
Spatial Variations ◽  
Mineral Density ◽  
Heterogeneous Distribution ◽  
Vertebral Trabecular Bone ◽  
Vertebral Strength

Current fracture risk estimates for the spine are based on average measures of bone mineral density (BMD) in the vertebral centrum. However, these measures of BMD explain only ∼60% of the variance in vertebral strength [1] and do not discriminate well between fracture and non-fracture cohorts [2]. These limitations of average BMD are likely due to the heterogeneous distribution of bone tissue throughout the vertebra. The density and architecture of vertebral trabecular bone vary as a function of position in the centrum [3]; moreover, these spatial variations have been shown to vary substantially among individuals and with age [3].

Abstract #225 Trabecular Bone Score is Lower in Patients on Permanent Hemodialysis Compared to Controls Matched for Bone Mineral Density

2019 ◽  
Vol 25 ◽  
pp. 77-78
Author(s):  
Roxana Dusceac ◽  
Dan Niculescu ◽  
Madalina Sorohan ◽  
Ramona Dobre ◽  
Catalina Poiana
Keyword(s):  
Bone Mineral Density ◽  
Trabecular Bone ◽  
Bone Mineral ◽  
Trabecular Bone Score ◽  
Mineral Density

Inadequate vitamin D status adversely affects trabecular bone mineral density in 14-18 year old adolescents

2017 ◽  
Author(s):  
Taryn Smith ◽  
Laura Tripkovic ◽  
Camilla Damsgaard ◽  
Christian Molgaard ◽  
Aine Hennessy ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Trabecular Bone ◽  
Bone Mineral ◽  
Vitamin D Status ◽  
Mineral Density ◽  
Trabecular Bone Mineral Density
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