Weight gain per inch of new lengthening

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Assuming you are done with your leg lengthening, internal nails are removed, and your weight and proportions are back to normal. Does someone have an idea how much weight you will gain per inch of new length on the femurs and/or tibias? Because with each inch of lengthening, you have new bone, muscles, soft tissues/flesh to fill that gap. I assume the femurs will produce more weight than tibias because there is more flesh around the femurs.

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This website has various weight percentage distributions of body parts.
The average sample for 100 men is 173.1cm / 73kg , which is 5’8.1” / 161 lbs

https://exrx.net/Kinesiology/Segments

So an estimate of 1kg (2.2 lbs) per inch on the femurs is reasonable.

Would 0.6kg (1.3 lbs) per inch on the tibias seem reasonable?

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The reason I’m asking is that I saw a question asked by a potential patient, asking if the weight gain from LL will shorten your lifespan, because more body mass will cause your heart and other vital organs to work harder.

It looks like the weight gains are very small (unless you lengthen excessively) and will have a negligible effect on lifespan.