Bell played just 15 games at West Virginia in 2012 before the injury. The Pirates signed him out of high school in 2011 for $5 million, a record for a second-round Draft pick.
Bell has gotten off to a decent start, hitting .280 with one home run and 14 RBIs through his first 11 games.
"I think last year I started off kind of slow," Bell said. "But things changed this year a little bit more in my legs and the ball is flying right now, so I feel good about that."
General manager Neal Huntington indicated that the Pirates are not opposed to promoting Bell to Class A Bradenton this season if his play indicates he is ready.
George Von Benko is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.