MEQUON, Wis.(AP) St. Louis Rams guard Mark Setterstrom left before practice Tuesday with numbness in his right leg and foot, which the team believed may have been caused by a brace pinching on a nerve.

A precautionary MRI exam was ordered for the third-year player, who had season-ending knee surgery after the third game last season. Setterstrom was one of three offensive line starters to finish the year on injured reserve, a big reason for the Rams' 3-13 season.

Setterstrom wears a brace on both knees.

Rookie wide receiver Donnie Avery, the team's second-round pick, cracked a bone in his pelvis. Coach Scott Linehan said it was a very small crack and believed he'd be sidelined no longer than a week or two, with rest prescribed.

``It's an unusual injury, but not a serious injury,'' Linehan said. ``I think it's more of a pain tolerance type thing.''

The Rams signed 315-pound defensive tackle Henry Smith, released by the Patriots on June 12 after spending the offseason in their conditioning program. Rookie defensive tackle Josh Thompson, sidelined by a torn plantar fascia, was waived with an injury settlement.

Tight end Anthony Becht has a hamstring pull that could keep him out a week, and linebacker Chris Draft did not dress because of lower back stiffness.