Placed on Detroit's injured reserve list roughly one month ago, Lions defensive back Amari Spievey continues to miss all team-affiliated workouts after suffering a serious brain injury earlier in the season, reported Dave Birkett of the Detroit Free Press.

The 24-year-old Spievey made five starts at safety this season for head coach Jim Schwartz's defense, but was forced to the sideline after a scary head injury left him with a concussion in Week 6. Due to lingering effects from the concussion, coupled with three previous head injuries over his lifetime, Spievey's future with the organization has now been immediately thrown into question.

Spievey previously suffered a concussion during Detroit's NFC wild card loss to New Orleans in January, even though his two prior head injuries occurred before he finished high school. With Spievey now the second Detroit Lions player in recent memory to be forced away from the game due to concussion problems along with tailback Jahvid Best, the organization is hoping that their talented defensive back's latest injury was a coincidence and not the beginning of a trend.