Mini ReviewPublished 20 August 20263D- and 4D-printed scaffolds for osteoporotic bone regeneration: translational insights from in vivo preclinical and human-oriented studiesMiguel Castro-Rodríguez · Luis Diaz-Gomez · Yolanda Sanz · Carmen Alvarez-Lorenzo · María Vallet-RegíFrontiers in Biomaterials Sciencedoi 10.3389/fbiom.2026.1937864