The "Klein" Patient offers you a unique opportunity worldwide to practice on the anatomy of a one-year-old. The PHACON Temporal Bone Patient "Klein" is based on a CT dataset of a one-year-old child. Procedures such as mastoidectomy or preparation for implant bed can be taught. It includes the ossicles as well as important landmarks such as the Facial nerve or Sigmoid sinus. A complex auricle has been created for electrode insertion into the tympanic membrane.