𝔖 Bobbio Scriptorium
✦   LIBER   ✦

HRTEM Study of the Mineral Phases in Human Cortical Bone

✍ Scribed by Renlong Xin; Yang Leng; Ning Wang

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
1012 KB
Volume
12
Category
Article
ISSN
1438-1656

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Although bone minerals have been widely studied by various techniques in previous studies, crystal structures and morphology of bone minerals remained as controversy. In this study, bone minerals were extracted from human cortical bone with ethylenediamine tetraacetic acid solution (pH 7.4, ambient temperature) and examined by high‐resolution transmission electron microscopy. The results showed that the majority of bone minerals were flake‐like and a few were needle‐like. Most of flake‐like minerals were less than 100 nm in their largest dimension and the needle‐like minerals have a width of ∼10 nm. Hydroxyapatite structure was identified in relatively thick bone minerals. However, octacalcium phosphate structure was identified in relatively thin flake‐like bone minerals. Moreover, central dark line defect similar to that reported in dentin and enamel crystals was observed in some of needle‐like bone minerals.

📜 SIMILAR VOLUMES

HRTEM Study on the Structure of Boundari
HRTEM Study on the Structure of Boundaries between Grains of Different Phases in BSCCO-Type Ceramics
✍ Zakharov, N. D. ;Hesse, D. ;Frank, H. ;Stollmann, R. ;Güntherodt, G. 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 433 KB 👁 1 views

The structure of grain boundaries between grains of different BSCCO-type phases in BSCCO ceramics is investigated by high-resolution transmission electron microscopy (HRTEM). Regular interphase grain boundary structures are found, and corresponding atomic scale models are derived. The structure of t

Correlates of trabecular and cortical vo
Correlates of trabecular and cortical volumetric bone mineral density of the radius and tibia in older men: The osteoporotic fractures in men study
✍ Kamil E Barbour; Joseph M Zmuda; Elsa S Strotmeyer; Mara J Horwitz; Robert Boudr 📂 Article 📅 2010 🏛 American Society for Bone and Mineral Research 🌐 English ⚖ 120 KB 👁 2 views

Quantitative computed tomography (QCT) can estimate volumetric bone mineral density (vBMD) and distinguish trabecular from cortical bone. Few comprehensive studies have examined correlates of vBMD in older men. This study evaluated the impact of demographic, anthropometric, lifestyle, and medical fa

Study of the mineral?organic linkage in
Study of the mineral?organic linkage in an apatitic reinforced bone cement
✍ Dandurand, J. ;Delpech, V. ;Lebugle, A. ;Lamure, A. ;Lacabanne, C. 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 436 KB

In order to increase mechanical properties of surgical cements, an apatitic filler has been linked to the polymethylmethacrylate (PMMA) matrix. We report here the study of the linkage between the mineral and organic components by a dielectric spectroscopy: Thermally Stimulated Current. First, the mi

The role of collagen in the declining me
The role of collagen in the declining mechanical properties of aging human cortical bone
✍ Zioupos, P. ;Currey, J. D. ;Hamer, A. J. 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 238 KB 👁 3 views

The importance of the mechanical role of collagen in bone is becoming increasingly more clear as evidence mounts on the detrimental effects of altered collagen on the mechanical properties of bone. We previously examined a set of mechanical properties (material stiffness, strength, and toughness) of

Determining the degree of cortical bone
Determining the degree of cortical bone asymmetry in bilateral, nonpathological, human femur pairs
✍ Teri G. Rosenbaum; Tracy Hamblin; Roy D. Bloebaum 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 114 KB

## Abstract When testing the effects of a femoral component on cortical bone following total hip arthroplasty, the patient's implanted femur is often compared with his/her contralateral nonimplanted femur, with differences attributed to the femoral component. However, if normal anatomical differenc

Revisions in the microscopic method of e
Revisions in the microscopic method of estimating age at death in human cortical bone
✍ Ellis R. Kerley; Douglas H. Ubelaker 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 136 KB 👁 3 views

## Abstract Problems recently discovered in the Kerley method of estimating age at death from cortical microstructure are discussed. Kerley's original data have been re‐analyzed to produce new regression equations and to document the original field size.