Temporal Bone Dissection (Cadaver)
Cameron M. A. Crasto1; C. Scott Brown, MD2
1University of Toledo College of Medicine
2University of Miami Miller School of Medicine
Temporal bone dissections are a critical learning tool for otologic/neurotologic surgery. The “Temporal Bone Dissection Manual” from the House Institute has long served as a ‘gold standard’ for the stepwise demonstration of this process. In this video, a progressive step-by-step dissection of the temporal bone is performed. Key anatomical structures and landmarks and outlined, and their physiological importance in the context of different otologic pathologies is explained. The procedure begins with the identification of soft tissue landmarks and surface anatomy before delving into cortical mastoidectomy and facial nerve identification. The mastoid tip region is discussed, before moving on to describe the tegmen and endolymphatic sac. A facial recess dissection is performed and middle ear anatomy is explained. A labyrinthectomy and exposure of the internal auditory canal conclude the dissection. In addition to going over the anatomy of the temporal bone dissection, a discussion of how to execute these procedures safely and efficiently is conducted.
By having a thorough understanding of the anatomy of the temporal bone, medical students, residents, and fellows are better able to understand the reasoning behind different otologic procedures and how they can be used to treat patients. This demonstration was created to inform and teach residents and medical students about temporal bone anatomy.