12. The expert system of claim 11, wherein said knowledge base includes rules that relate said trauma and patient characteristics to characteristics of said treatments, said forward chaining establishes a sub-sequence of rules relating to a particular treatment characteristic, and said backward chaining reverses said sub-sequence of rules an tests said sub-sequence of rules based on said trauma and patient characteristics, to thereby determine teh desirability of said particular treatment characteristic.
11. An expert system for providing to a user a suggested treatment for a patient having physical trauma, comprising: at least one knowledge base containing rules that relate different types of physical trauma characteristics and patient characteristics to different types of treatments for physical trauma, a computer for receiving said knowledge base and information from said user concerning characteristics of said patient, including the type of physical trauma sustained by said patient, to thereby develop at least one database containing patient and trauma characteristics; and an processor within said computer to infer the appropriate treatment for said patient from said rules and said database by forward chaining, in which a sequence of rules relating to a particular treatment is established, an then by backward chaining, in which said sequence of rules is reversed and said rules are tested based on said trauma and patient characteristics, to determine the desirability of said particular treatment.