After missing the last five games, Lions running back Jahvid Best has been placed on injured reserve, ending his season.

Best sustained his concussion in the loss to the 49ers on Oct. 16. It was his second this season. His first concussion occurred during training camp.

While in his senior year of college at Cal, Best also sustained a concussion.

The Lions have struggled with the running game since he’s been out of action.

They re-signed Kevin Smith who had a solid effort in the win against the Panthers on Sunday. But early in the Thanksgiving game Smith injured his ankle and didn’t return. Afterward he said X-rays were negative. Reports are that he has a high ankle sprain. Recovery can vary with that specific injury.

The Lions next game is on Dec. 4 at New Orleans at 8:30 p.m. on Sunday night football.

(Follow @PaulaPasche on Twitter. Get Lions news delivered directly to your phone by texting the keyword "Lions" to 22700. Msg & Data Rates May Apply. Text HELP for help. Text STOP to cancel.)