Ok so after being at the hospital for two hours while they examined Arnold's hip area we finally have a diagnosis and it has nothing to do with his hip despite the severe swelling and deep purple red bruising.
It turns out that it is actually his pelvis which is fractured. The Doc tried to give him the rest of the month off, but he reluctantly had to decline the offer. With instruction to avoid heavy lifting and any tasks that require a ladder he was back to work the next day.
With pain meds in hand, that sore leg that makes him feel old getting in and out of the car should heal just fine on its own in just a matter of weeks. He was told to avoid skateboarding for a couple of months, but I doubt that will happen.