Armstead missed several games last season with injuries. In his absence, an offensive line that bordered on a top 5 product faltered. They still ended up a top 12 group.
Armstead tore his labrum in mini-camp workouts. This labrum, the glenoid labrum, is a part of the shoulder girdle. The head (or ball) of the humerus bone sits in a small capsule in the shoulder “socket”. It is encapsulated by tissue. This tissue makes up part of the labrum. It can be torn by falling badly, a direct blow, or a sudden pull to the arm or shoulder.