Robinson (thumb) was signed to the Broncos' practice squad Friday, Aaron Wilson of Sportstalk 790 Houston reports.
Robinson started off the season on the practice squad then was promoted to the active roster at the beginning of October. The linebacker then picked up a thumb injury in the Broncos' loss to the Browns in Week 7 and was later waived by the team. Robinson will rejoin Denver and serve as extra organizational depth at the position.