Mailata said Friday that his back injury is a stress fracture, Les Bowen of the Philadelphia Daily News reports.
Mailata also disclosed his recovery timetable to be about six weeks, meaning that the rookie seventh-round selection will not be in danger of missing offseason workouts. He'll focus his attention on a 2019 return.
Mailata was placed on injured reserve Friday with a back injury, Adam Caplan of SiriusXM Radio reports.
Mailata was added to the injury report Thursday as a non-participant and will now see his rookie campaign come to a premature end. Halapoulivaati Vaitai remains as a depth option at offensive tackle for the Eagles.