FLORHAM PARK, N.J. -- Jets running back Bilal Powell (concussion) and rookie wide receiver Stephen Hill (illness) did not practice Wednesday.

Powell was at practice but was off to the side. Jets coach Rex Ryan said he sent Hill home for the day. Powell suffered the concussion last Sunday and will have to pass all the tests to be cleared in time for Sunday's game vs. St. Louis.

Running back Joe McKnight (ankle), linebacker Bart Scott (toe) and defensive tackle Sione Po'uha (lower back) all had limited practices. Scott and Po'uha both played last Sunday against Seattle, while McKnight missed the game.

Cornerback Isaiah Trufant, who was placed on IR Tuesday after injuring his left knee last Sunday, will have surgery to repair a torn MCL and meniscus, a source told ESPNNewYork.com's Rich Cimini.

Here's the full injury report:

JETS

DID NOT PRACTICE
WR Stephen Hill (illness)
RB Bilal Powell (concussion)

LIMITED PRACTICE
DT Sione Po'uha
LB Bart Scott
RB Joe McKnight

FULL PRACTICE
DT Kenrick Ellis (knee)
OG Brandon Moore (hip)
C Nick Mangold (ankle/thumb)
S Eric Smith (knee)
QB Mark Sanchez (low back)
OG Matt Slauson (knee)
LB Calvin Pace (shoulder)
DE Mike DeVito (finger)
WR Clyde Gates (shoulder)
DL Damon Harrison (thumb)
TE Jeff Cumberland (wrist)
QB Tim Tebow (ribs)
WR Jeremy Kerley (heel)
S LaRon Landry (heel)

RAMS

LIMITED PRACTICE
WR Austin Pettis (toe)
DE Eugene Sims (knee)
S Darian Steward (knee)