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.

减压颅骨切开术后可能需要进行颅骨成形术，以帮助恢复受影响患者的审美，形态，功能和社会心理稳定性。该临床报告描述了患有减压性颅骨切除术后自体颅骨植入失败的昏迷道路交通事故受害者的处理方法。通过使用逆向工程和快速原型制造3D患者专用的聚甲基丙烯酸甲酯颅骨植入物，可以克服患者非活动状态所带来的挑战以及他无法遵循命令。在患者不在场的情况下，成功实现了以网格为测量工具的数字评估技术。使用定制的夹瓶器有助于雕刻后的颅蜡图案的容纳和后续的投资，脱蜡和聚合。