>  incomplete vs. complete
>   burning of fat as relates to ketones.
>
From Taber's Cyclopedic Medical Dictionary:

Ketone - a substance containing the carbonyl group (C=O).  Oxidation product of a
secondary alcohol.  Acetone is an example of a simple ketone.  The ketone acids in
the body are the end products of fat metabolism.

Ketosis - the accumulation in the body of  the ketone bodies: acetone,
beta-hydroxybutyric acid, and acetoacetic acid.  It is frequently associated with
acidosis and is often miscalled acidosis.  Ketosis results from the incomplete
metabolism of fatty acids, generally from carbohydrate deficiency or inadequate
utilization, and is commonly observed in starvation, high-fat diet, pregnancy,
following ether anesthesia, and most significantly in diabetes mellitus.  Large
quantities of these ketone bodies may be eliminated in the urine (ketonuria).

I hope this info helps :).

pax,
phyllis