Xconomy -- Cambridge, MA-based iWalk, the developer of an advanced prosthetic ankle and foot, has raised $15 million in its third round of financing, according to a report by Scott Kirsner of the Boston Globe. Boston-area venture firms Sigma Partners and General Catalyst participated in the round, as well as New York-based WFD Ventures, the report says. iWalk was founded in 2006 by MIT Media Lab professor Hugh Herr, and is led by CEO Tim McCarthy.
