Honestly, I understand why a physician might not want to seem nosy or asking inappropriate questions of a patient. But seriously:
Asking your patient why they don't have legs is a relevant part of the medical history.
I was supervising a resident doing an EMG the other day and I was shocked to enter the room and discover the patient was a bilateral above knee amputee. Granted, the patient came in for numbness in the hands, but I was still baffled when she didn't even ask the woman why she didn't have legs. I mean, at least mention it when you're presenting the patient so my jaw doesn't drop open when I see her.