FP03-8. EDUCATION OF ANATOMY AND SURGERY FOR RESIDENTS USING RAPID-PROTOTYPED TEMPORAL BONE MODEL

Mamoru Suzuki, Akira Hagiwara, Yasuo Ogawa (Tokyo Medical University), Hidenori Ono (ONO & CO.LTD, Japan)

 

Objectives: The authors had already reported that a 3-D temporal bone model prototyped using selective laser sintering method is useful for surgical simulation.  This model could also be used for educating the temporal bone anatomy and surgery for residents.

Methods: Models of the normal temporal bone and inner ear were created using selective laser sintering. They were dissected using conventional instruments under microscope.  The dissection process was video recorded for the instruction before dissection.  The inner ear models were also created by reversing the CT data.

Results: The models could be dissected in the same way as the actual surgery.  The order of dissection process is, widening of the ear canal, complete mastoidectomy, facial nerve exposure, posterior tympanotomy, dissection of the semicircular canals and endolymphatic sac, canal down approach and dissection of the internal auditory meatus.  The residents are requested to dissect the model in this order under guidance of the senior author.  Afterwards they dissect a model on their own. The inner ear models were useful to get a 3-D orientation of the inner ear during dissection. 

Conclusions: The 3-D prototyped model using selective laser sintering method is useful for acquisition of anatomical orientation and surgical skills.

* Contact person email: otosuzu@tokyo-med.ac.jp