Abstract:
:The lamellar bone's strength is mainly affected by the organization of its mineralized collagen fibers and material composition. In the present study, Raman microspectroscopic and imaging analyses were employed to study a normal human femoral midshaft bone cube-like specimen with a spatial resolution of approximately 1-2 microm. Identical bone lamellae in both longitudinal and transverse directions were analyzed, which allowed us to separate out orientation and composition dependent Raman lines, depending on the polarization directions. This approach gives information about lamellar bone orientation and variation in bone composition. It is shown that the nu1 PO4 to amide I ratio mainly displays lamellar bone orientation; and nu2 PO4 to amide III and CO3 to nu2 PO4 ratios display variation in bone composition. The nu2 PO4 to amide III ratio is higher in the interstitial bone region, whereas the CO3 to nu2 PO4 ratio has lower values in the same region. The present study provides fresh insights into the organization of a lamellar bone tissue from two orthogonal orientations.
journal_name
Bonejournal_title
Boneauthors
Kazanci M,Wagner HD,Manjubala NI,Gupta HS,Paschalis E,Roschger P,Fratzl Pdoi
10.1016/j.bone.2007.04.200subject
Has Abstractpub_date
2007-09-01 00:00:00pages
456-61issue
3eissn
8756-3282issn
1873-2763pii
S8756-3282(07)00397-3journal_volume
41pub_type
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