Lets get some links now, and will likely add to this, as I really could use a new set of knees .. and I am counting on someone finding a solution for me.

First is an older article from Johns Hopkins: Tissue Engineers Steering Stem Cells to Produce Bones, Cartilage. Its a bit out of date, but gives some background.

Within this PDF is further info about Jennifer Elisseeff's work at Johns Hopkins as well. Worth a read for a general insight and interview .. her article is farther down in the PDF.

More Still at Johns Hopkins from the Stem Cell Journal: Musculoskeletal Differentiation of Cells Derived from Human Embryonic Germ Cells

Next is a REALLY in depth article about this further research from Tissue Engineering from work done at Johns Hopkins - Warning .. EXTREMELY comprehensive, but a good read.

And finally for now a considerably older link regarding work done targetting arthritis patients at Duke University: Stem Cell Generated Cartilage Potential Replacement Tissue for Osteoarthritis

Also from Duke: Creating Cartilage from Stem Cells .. old but relevant.

More recent entries here soon... as I dig on.