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Home / Equine Research Bank / Calcif Tissue Int / Characterization of bone mineral crystals in horse radius by...
Calcified tissue international1996; 58(5); 341-346; doi: 10.1007/BF02509383

Characterization of bone mineral crystals in horse radius by small-angle X-ray scattering.

Abstract: The size and the orientation of the bone salt (mineral) crystals in the cranial and caudal zones in the transverse midshaft section of the equine radius were investigated by small-angle X-ray scattering (SAXS). The results are interpreted as indicating that the crystals had an elongated shape with an average thickness of T = 3.17 +/- 0. 15 nm in the caudal region and T = 3.79 +/- 0.20 nm in the cranial region. Their orientation was predominantly in the longitudinal direction of the bone. There was no preferential orientation within the transverse plane. The distribution of tilt angles with respect to the longitudinal direction was determined directly from the SAXS data: the average angle was about 30 degrees for the cranial region and 45 degrees for the caudal region. Assuming that the needle-like crystals are parallel with the collagen fibrils, the angular distribution of the crystals is in good agreement with previous measurements of collagen orientation using circularly polarized light microscopy.
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Publication Date: 1996-05-01 PubMed ID: 8661969DOI: 10.1007/BF02509383Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This research investigated the size, shape, and orientation of mineral crystals in horse bone using a technique called small-angle X-ray scattering. The crystals were found to be elongated, with thickness varying between different regions of the bone, and they were primarily oriented along the length of the bone.

Research Methodology

  • The study used small-angle X-ray scattering (SAXS) to examine the bone salt (mineral) crystals in the cranial and caudal zones of the horse’s radius (a bone in the lower forelimb).
  • SAXS is a technique that allows for the examination of nanoscale structures within materials. In this case, it was used to determine the size, shape, and orientation of the mineral crystals within the bone.

Research Findings

  • The analysis revealed the crystals to be elongated in shape. The average thickness of the crystals was found to be 3.17 nanometers (nm) in the caudal region (the back of the radius) and 3.79 nm in the cranial region (towards the head).
  • The bone mineral crystals were predominately oriented in the longitudinal direction, meaning they were aligned along the length of the bone. No specific orientation was observed within the transverse plane (perpendicular to the length of the bone).
  • The distribution of tilt angles – the angle at which the crystals deviated from perfect alignment with the length of the bone – was analysed from the SAXS data. It was found to be around 30 degrees for the cranial region and 45 degrees for the caudal region.

Discussion and Conclusion

  • The researchers suggested that the needle-like crystals might align parallel with the collagen fibrils in the bone. Collagen fibrils provide structural support and strength to bones.
  • The distribution of the crystals’ angles was in good harmony with previous measurements of collagen orientation obtained using circularly polarized light microscopy. This implies that the mineral crystals in the bone and collagen fibrils share a similar orientation, providing further evidence that mineral crystals may be aligned with collagen.

Cite This Article

APA
Fratzl P, Schreiber S, Boyde A. (1996). Characterization of bone mineral crystals in horse radius by small-angle X-ray scattering. Calcif Tissue Int, 58(5), 341-346. https://doi.org/10.1007/BF02509383

Publication

Calcified tissue international
ISSN: 0171-967X
NlmUniqueID: 7905481
Country: United States
Language: English
Volume: 58
Issue: 5
Pages: 341-346

Researcher Affiliations

Fratzl, P
  • Institut für Festkörperphysik der Universität Wien, Strudlhofg.4, A-1090 Wien, Austria.
Schreiber, S
    Boyde, A

      MeSH Terms

      • Animals
      • Bone Density
      • Bone and Bones / chemistry
      • Crystallography
      • Horses
      • Minerals / analysis
      • Minerals / chemistry
      • Radius
      • Scattering, Radiation

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