Arnold is out for the rest of the season after opting for shoulder surgery.
Terrion Arnold, and the Detroit Lions training staff, decided to let the second-year cornerback play on an injured shoulder after he had already missed time due to that affliction. After suffering a recent concussion, followed by inflaming that same shoulder injury, the defender is out for the year after opting to finally surgically repair that same shoulder.
What was once a seemingly season-ending injury for Arnold became just a bump he had to mend for a few weeks, and now we're back at square one regarding that same injury.