Advances in patient-specific 3D-printed models in temporal bone surgery

Temporal bone surgery requires high precision drilling near critical anatomical structures. Traditional planning relies on expertise and the mental reconstruction of 2D imaging, which is cognitively demanding and might lead to errors. This review provides an overview on the steps required to generate accurate models and the current state of patient-specific 3D-printed models as tools for preoperative rehearsal, intraoperative navigation, and patient communication.

Advances in high-resolution imaging, segmentation routines and 3D-printers have streamlined the creation of patient-specific replicas of the temporal bone. Reports demonstrate that physical rehearsal on these models could aid determining surgical corridors, safely navigate aberrant anatomy, and refine approaches for accessing complex pathology. In the operating room, these models can serve as 3D references, potentially reducing the cognitive load associated with interpreting traditional 2D imaging data. 3D-printed models might improve patient comprehension and shared decision-making by translating abstract data into a tangible format despite limited reports in temporal bone surgery.

Patient-specific models show immense promise for enhancing surgical precision and safety, but the current literature is limited by a lack of high-level evidence and standardized reporting. Future research must transition from feasibility studies to rigorous clinical validation before these models are introduced into clinical standard of care.