Abstract
Objective To design and assess the quality of a novel lateral retrocanthal endoscopic approach
to the lateral cavernous sinus.
Design Computer modeling software was used to optimize the geometry of the surgical pathway,
which was confirmed on cadaver specimens. We calculated trajectories and surgically
accessible areas to the middle fossa while applying a constraint on the amount of
soft tissue retraction.
Setting Virtual computer model to simulate the surgical approach and cadaver laboratory.
Participants The authors.
Main Outcome Measures Adequate surgical access to the lateral cavernous sinus and adjacent regions as determined
by operations on the cadaver specimens. Additionally, geometric limitations were imposed
as determined by the model so that retraction on soft tissue structures was maintained
at a clinically safe distance.
Results Our calculations revealed adequate access to the lateral cavernous sinus, Meckel
cave, orbital apex, and middle fossa floor. Cadaveric testing revealed sufficient
access to these areas using <10 mm of orbital retraction.
Conclusions Our study validates not only the use of computer simulation to plan operative approaches
but the feasibility of the lateral retrocanthal approach to the lateral cavernous
sinus.
Keywords
cavernous sinus - endoscopic - pituitary - transnasal - transsphenoidal - transorbital