Although Jade was originally scheduled for spay surgery in August, she came in season at the time of her appointment and was thus rescheduled to October 3. While she was anesthetized, she was also microchipped and had a follow up pelvis xray taken. This is a photo of that xray:
The vet said the femoral head on the right side appears to have stopped growing. Necrosis of the femoral head is apparently a common result of traumatic injury to the hip (which in Jade’s case was being run over by a truck). The blood supply to the femoral head was cut off and that part of the joint basically died. She has less muscle mass on the right rear leg than she does on the left. Despite this, she does very well and the vet said so long as she continues to do well, no surgery is needed. If however she goes lame on the right side at some point in future, a femoral head ostectomy would be recommended.
Meanwhile, a bum hip and major abdominal surgery be damned, there is flopping for belly scratches to be done: