Martinez will not appear in exhibition games. He is to throw on flat ground for the next week before moving to a mound.
St. Louis has not announced a timetable for Martinez's arm-strengthening program. The pitcher received a platelet-rich plasma injection two weeks ago, and manager Mike Shildt said treatment improved Martinez's condition.
A 27-year-old right-hander, Martinez was the Cardinals' Opening Day starter last year but did not pitch for St. Louis from May 8 until June 5 because of a strained right lat muscle, then was out between July 19 and 30 because of a strained right oblique and between July 30 and Aug. 21 because of a strained right shoulder.
When he returned, he pitched out of the bullpen and had five saves. He finished 8-6 with a 3.11 ERA in 18 starts and 15 relief appearances.