left rear ankle joint diameter calculated ankle joint diameter absolute change in left rear ankle joint diameter 2014-01-30T18:55:36Z A calculated measurement of the difference in left rear ankle joint diameter between two points in time or two conditions expressed as the result of the subtraction in and of itself without comparison by ratio with another quantity. CMO:0002152 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. clinical_measurement_ontology