Cranioplast fabrication in a comatose patient: A clinical report

Cranioplasty may be necessary after decompressive craniectomies to aid in the restoration of the esthetic, morphological, functional, and psychosocial stability of those affected. This clinical report describes the management of a comatose road traffic accident victim with a history of autogenous cranial implant failure after decompressive craniectomy. The challenges posed by the nonambulatory state of the patient and his inability to follow commands were overcome by using reverse engineering and rapid prototyping to fabricate a 3D patient-specific polymethylmethacrylate cranial implant. A digital evaluation technique with grids as measuring tools was successfully implemented in the patient's absence. The use of a custom clamp flask aided in the accommodation and subsequent investing, dewaxing, and polymerization of the carved cranial wax pattern. As a result, a custom cranioplast with optimum marginal fit, acceptable contour, adequate thickness, and reduced surgical duration of placement was obtained through a successful combination of conventional and digital techniques.