This is true. We don't know since they did not mention with certainty any physical characteristics such as birth marks or scars.
I have never been able to visually see the possible surgical scar on BK's neck in the photos...so I have no idea how large or small it is either.
Another thing we have to consider is that the family of BK may not be aware of those scars or injuries he has sustained. We don't know if this is his first bout of amnesia or how long he could have been estranged from his family before now.
I am trying to understand how the physicians at the hospital who nursed BK back to health don't know the exact procedure done to his elbow if there are pins and plates. A simple x-ray would be able to detect if it was due to a break, a shatter, or something else. (pins and plates should have numbers which are traceable, too) Also, they should be able to tell if he definitely had surgery to his spine via the neck area.
I have never heard of a drainage tube being used on the outside of the face for an abcessed tooth. This doesn't make sense to me. (Maybe someone can enlighten me.) I found a case where a woman was in critical condition due to an abcess and altho they did use a needle to aspirate, a drainage tube was only used in the neck area and not on the face or jaw. (This could explain his neck scar.) http://www.cda-adc.ca/jcda/vol-67/issue-6/324.html
Sorry to double post but perhaps this will help a little. Abscesses are normally very difficult to heal. Depending on whether the abscess was superficial or deep would decide whether aspiration would be sufficient or if indeed surgical intervention would be needed. In the event of deep tissue deterioration, one would need to cut open the tissue in order to access the infected area. After the wound is cleaned and removed of all cellular and tissue debris the wound would be packed with sterile gauze. The gauze would need to be changed frequently and the area cleaned to ensure that healing occurred without the reoccurrence of pus formation. In deep tissue abscesses scar tissue is almost a guarantee especially in the face/neck area.
I am not familiar with dental abscesses and how they are treated but Im sure this doesnt stray too far from the steps in which they treat. I didnt want to go into too much detail and gross everyone else out. lol