Aybar has been out of the lineup for three consecutive days with a suspected sports hernia, an unusual occurrence for the durable shortstop, and Scioscia said he would be further examined next week before determining if he will return at any point this season.
Dr. John Preskitt, the Dallas-based doctor who performed the surgery to repair Torii Hunter's sports hernia, will be evaluating Aybar next week.
"Obviously, we're concerned about this, and he'll get evaluated next week and see what direction we're going to go with it," Scioscia said.
Aybar, scratched from the lineup Friday night with a "left leg strain," is hitting just .254 on the year with a .306 on-base percentage, but his speed has been a valuable asset for the Angels as he has stolen a career-high 20 bases and leads the Major Leagues with 17 bunt hits.
Scioscia said Shields' MRI showed "just a little inflammation" in his right elbow, and the staff is "trying to let it calm down" before making any decisions about his potential return. Scioscia appeared more optimistic about Shields getting back on the mound this season, however, when asked if the right-hander will pitch during the team's final 14 games.
"I think at some point, yes," Scioscia said.