Hi Alicia - so sorry about your accident and the trauma both you and Joe suffered (and are still suffering from). Joe will probaby benefit from PT, but also needs to have investigations done of his shoulder/s - has he had xray's/ultrasound at least? Depending on how he landed, it could just be bruising/swelling, or some structures may be damaged/torn. Shoulders are tricky joints - often painful, slow to heal from trauma. He needs someone to check out thoroughly what is going on, considering he has probably had signifcant forces applied to his body during the accident. Often many injuries are missed at an Emergency Room. As someone in his shoes, I would be getting screened for bony/tendon damage - and if that is all clear - I would be heading to the PT for gentle treatment and shoulder rehab.