iWalk Inc., a Bedford, Mass.-based maker of bionic lower leg prosthetics, has raised $17 million in Series D funding. Gilde Healthcare Partners led the round, and was joined by return backers WFD Ventures, General Catalyst Partners and Sigma Partners. www.iwalk.com

Edo, a Nashville, Tenn.-based provider of personalized card-linked offers, has raised $15 million in Series C funding. VantagePoint Capital Partners led the round, and was joined by return backers like Baird Venture Partners. www.edointeractive.com

Open Garden, a San Francisco-based provider of mobile social connectivity solutions, has raised $2 million in seed funding. Angel investor Allan Green led the round, and was joined by David Ulevitch (CEO of OpenDNS), Derek Parham (ex-Google) and Digital Garage. www.opengarden.com

KeVita Inc., a Sherborn, Mass.-based maker of sparkling probiotic beverages, has raised an undisclosed amount of Series B funding led by KarpReilly Investments. Silverwood Partners served as placement agent. www.kevita.com