no I didn't lose any calf flexibility when lengthening femurs. The thought of calves at that time are virtually irrelevant as you will be unable to bend the knee fully, the hamstring will be tight, the hip muscles as well, those all take priority when lengthening femurs. Also the crossing of legs, and getting the abductor muscles to stretch laterally as well. Also the gluts are tight as well so there is a lot of things to stretch if you want to lengthen femurs. Also my hip muscles got very weak so strengthening that via leg lifts is so important.
I'm surprised you didn't lose calf flexibility.
I know it would be hard to measure, but I had assumed that people will lose calf flexibility just because they are more sedentary during LL.
Actually don't know if femur LL patients do any calf stretches during lengthening. Do they?