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Updated: Sep 9, 2026

An Experimental and Finite Element Protocol to Investigate the Transport of Neutral and Charged Solutes across Articular Cartilage
Published on: April 23, 2017
A consideration of the permeability of cartilage to inorganic sulfate
Abstract:
On the basis of an examination of autoradiograms of knee-joints fixed so as to remove chondroitin sulfate or inorganic sulfate, or to minimize the loss of both, it is suggested that the cartilage is permeable to inorganic sulfate in vivo and in vitro. In vivo and in vitro, almost as rapidly as it enters the cartilage, inorganic sulfate is utilized by the cells in the synthesis of chondroitin sulfate. The net result is a continuing low concentration of inorganic sulfate in the cartilage.
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