Duchscherer has been placed on the 15-day disabled list twice because of his inflamed left hip this season, the most recent time coming on May 16.
Duchscherer said he had a lubricant injected into his left hip joint earlier this week and that he doesn't know how it will respond. Duchscherer played catch on flat ground before Saturday's game against the Giants, exiting the field after a few minutes.
"We're making an attempt to avoid surgery," Duchscherer said. "We'll do this stuff and see how it goes."
Duchscherer said he will throw a couple of bullpen sessions in Arizona and try to make a couple of rehab starts before trying to come back to the big league club. He said he has no timetable for a return.
Duchscherer has a femoroacetabular impingement, which is caused when the ball and socket of the hip rub together abnormally, injuring the joint. If Duchscherer needs surgery, his season will likely be over.