left rear ankle joint diameter right rear ankle joint diameter calculated ankle joint diameter absolute change in the sum of right rear ankle joint diameter and left rear ankle joint diameter 2014-01-30T18:57:34Z A calculated measurement of the difference in the total of the right and left rear ankle joint diameters added together between two points in time or two conditions expressed as the result of the subtraction of the sums in and of itself without comparison by ratio with another quantity. CMO:0002154 JSmith The term "absolute change" refers to the subtraction of one value from another, as opposed to a dissimilarity of two values expressed as a ratio or as a percentage. In this context it is not intended to necessarily imply the difference expressed as an absolute value |n|, that is, the numeric value of the difference without regard to its sign. absolute change in the total left plus right rear ankle diameter clinical_measurement_ontology