Coach Gary Kubiak says Ryans will have surgery in the next couple of days to repair the injury.
Ryans, a second-round pick in 2006, has had more than 110 tackles in each of his first four NFL seasons.
LB Ryans suffers season-ending injury
HOUSTON
Ryans jumped and fell to the turf on a touchdown by the Chiefs.
He remained on the turf for a few minutes while trainers attended
to him before being helped to the cart.
