Scaffold Degradation vs. Tissue Growth Matching

Degradation vs. growth

Scaffold degradation rate 0.070 /wk

Simulation speed 1.0×

Strength over healing time

Scaffold strength New-tissue strength Combined Required threshold

Live readouts

Scaffold strength

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New-tissue strength

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Combined strength

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Required threshold

70%

Healing time

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Half-life

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How it works

The scaffold's own mechanical strength decays exponentially at a user-set rate k, independent of biology. The body's new tissue strengthens along a fixed logistic growth curve — its own biological clock, unaffected by the scaffold. Healing only stays safe when the two curves overlap enough that their sum never drops below the load-bearing threshold, and the scaffold has mostly resorbed by the time tissue alone is already sufficient.

scaffold(t)  = 100 · e^(−k·t)
tissue(t)   = 100 / (1 + e^(−0.3·(t−13)))
combined(t) = scaffold(t) + tissue(t)

Too fast (large k) — scaffold strength collapses before tissue has grown enough; combined strength dips below the required threshold mid-healing (failure risk zone).
Too slow (small k) — scaffold strength is still substantial long after tissue alone already clears the threshold; the leftover material occupies space the new tissue should be filling (residual-blocking zone).
Matched k — combined strength stays above threshold throughout, and scaffold mass is mostly gone by the time tissue has taken over.

Week 0.0 / 26

Intact scaffold strut New tissue fill

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