[CholeraJoe]

That's interesting. Sabiston's Textbook of Surgery only outlines four:

Burn Classifications

Causes

		Flame—damage from superheated, oxidized air
		Scald—damage from contact with hot liquids
		Contact—damage from contact with hot or cold solid materials
		Chemicals—contact with noxious chemicals
		Electricity—conduction of electrical current through tissues

Depths

		First degree—injury localized to the epidermis
		Superficial second degree—injury to the epidermis and superficial dermis
		Deep second degree—injury through the epidermis and deep into the dermis
		Third degree—full-thickness injury through the epidermis and dermis into subcutaneous fat
		Fourth degree—injury through the skin and subcutaneous fat into underlying muscle or bone

[Eagle Eye]

Understood, Doc.

What the man taught was that a burn that began to exit though bone could/should be classified beyond 4th degree and that this would be most common for electrical burns.

He wasn’t a crackpot as he was inducted into EMS hall of fame in 1995.

However his ideas won’t supercede Sabiston’s now will they?