Here's what rhymes with microstructural.

Consider these alternatives

inhomogeneities / deities rheological / logical histopathologic / logic biomechanical / mechanical osteological / logical neuropathological / logical biodegradability / stability phenotypical / critical predetermination / information preciseness / conciseness authoritativeness / imitativeness morphologic / logic epigenetic / magnetic bioactivity / activity conceptualizations / relations anatomic / economic temporality / personality