X-ray diffraction of the molecular substructure of human articular cartilage.

Abstract:

:The molecular substructure of human articular cartilage has been difficult to study because of its complex composition and high degree of hydration. Using newly available small-angle X-ray diffraction (SAX) instrumentation that allows very short exposure times (0.1 to 10 sec), we have obtained spatially resolved information concerning the disposition of collagen fibers in the matrix of cartilage from the normal and osteoarthritic ankle and knee joints of human cadavers. Surprisingly, in zones of cartilage damage, such as in preosteoarthritic lesions or in the severely degenerated cartilage of osteoarthritic joints, collagen fibers of the deeper layers tended to be reoriented from the vertical. The SAX technique represents a nondestructive method of analyzing the collagen network in cartilage. Taken together, the data suggest a rigid control mechanism for the fiber network and an extensive passive reorganization of the collagen fiber orientation in diseased joint cartilage.

journal_name

Connect Tissue Res

authors

Mollenhauer J,Aurich M,Muehleman C,Khelashvilli G,Irving TC

keywords:

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

201-7

issue

5

eissn

0300-8207

issn

1607-8438

pii

NM6QFQN4GD7QLB7Y

journal_volume

44

pub_type

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