Cushing was hurt in the second
quarter of the Texans' 23-17 win over the New York Jets on a low block
by guard Matt Slauson. Cushing walked off the field on his own, but
Coach Gary Kubiak said Tuesday that Cushing has a torn anterior cruciate ligament and will need surgery.
Tim Dobbins moved into Cushing's spot in the lineup, and finished with four tackles and a pass deflection.
The Texans (5-0) play Green Bay (2-3) in Houston on Sunday night.