Miller, hurt Dec. 5 in Baltimore, was expected to return for Sunday's game against the Jets, but developed post-concussion headaches and was held out. His replacement, Matt Spaeth, caught a touchdown pass during Pittsburgh's 22-17 loss.
Defensive end Aaron Smith (torn triceps) is being fitted with a shoulder brace so he can resume practicing, although coach Mike Tomlin did not say Monday when that might be. The Steelers practice only once this week.
Smith hasn't played since being injured Oct. 24 in Miami.
Copyright 2010 by The Associated Press