b) mesh:may be made of titanium or tantalum.Options include:

● standard flat mesh. It can be molded to a limited degree. Usually better for smaller defects,
e.g. < 5 cm diameter

● preformed mesh (e.g. SmartMesh by KLS Martin, or CranioCurve® by Zimmer Biomet):

mesh implants that are contoured to average skull shapes and common craniectomy
configurations