[Lupin's anxiety was a familiar one. She's seen many men with a similar set to their jaw and shoulder when she had to treat them. For his sake, she ignores it, though she leaves the rest of the injections until after the first takes effect.]

Magic. It probably kept the swelling down, and may have repaired a bulk of the damage to your clavicle, but the ligament is still strained. Probably halfway torn. You will need to keep your arm in a sling for the rest of the mission at the very least.