NFL Network was first to report that Ragnow met with Dr. Robert Anderson to get confirmation on the best course of action to treat the injury.
Ragnow was already on the injured reserve list for what Lions coach Dan Campbell described as a “version of turf toe.”
Ragnow earned his first Pro Bowl berth last season and became the NFL’s highest-paid center this offseason.
The winless Lions have suffered a pair of heartbreaking losses on last-second field goals while being hit with an onslaught of injuries. Wide receiver Quintez Cephus (collarbone), wide receiver Tyrell Williams (concussion) and cornerbacks Ifeatu Melifonwu (thigh) and Jeff Okudah (Achilles) among others, are all on the injured reserve list.