Shoulder impingement can develop after trauma

https://pr.walnutcreekmagazine.com/article/Atlantas-Hurt-911-Injury-Centers-Revolutionizes-Car-Accident-Recovery-with-Doctor-Led-Care-and-Legal-Support?storyId=6827816017bc4f0008d9ab83

Shoulder impingement can develop after trauma, causing pain with overhead movement and weakness that benefits from physical therapy and rest.