Steve Smith missed a crucial net session on Tuesday due to a sore back as Australia continue to be threatened by a series of injuries in the build-up to the four-Test series against India.

After having warmed up for 10 minutes by doing a few stretching exercises and running drills at the Adelaide Oval, Smith skipped the routine football session. He headed to the dressing room in some discomfort after tweaking his back while bending down to pick up a ball.

Team physiotherapist David Beakley accompanied him.

According to a team source, the 31-year-old batsman is likely to bat at the nets on Wednesday.

Smith was in scintillating form during the recent limited-overs series against India, striking successive 62-ball centuries in the one-dayers at the Sydney Cricket Ground.

Australia have been hit by multiple injuries, with David Warner (groin) and Will Pucovski (concussion) ruled out of the opening Test. Promising all-rounder Cameron Green too will have to clear the concussion protocols before he is considered for the series opener on Thursday.