Definition
The external fixation index measures the duration of external frame wear relative to the amount of lengthening, expressed in months per centimeter. It is a key metric for comparing hybrid techniques (LON, LATN) with classical external fixation, as reducing EFI is a primary goal of integrated approaches. Lower EFI values mean less time spent with an external frame.
Aliases
external fixator index
Sources
Informational only. Not medical advice.