From:  Innovations in paediatric orthopaedics: a narrative review of precision, personalisation, and biological restoration

 Pillars of the diamond concept in bone tissue engineering.

PillarBiological/mechanical roleKey references
Osteogenic cellsProvision of MSCs/osteoblasts[54]
Osteoinductive signalsGrowth factors for differentiation[55]
Osteoconductive scaffoldPorous structural template[62]
Mechanical stabilityRigorous internal fixation[63]

BMP: bone morphogenetic protein; MSCs: mesenchymal stem cells; 3D: three-dimensional.