system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Structure passing through both greater and lesser sciatic foramen are all EXCEPT:
assistant
The correct answer is  PIN (Pudendal nerve, Internal pudendal vessels and Nerve to obturator internus) structures come from pelvic cavity, pass through the Greater Sciatic Notch, hook behind the Ischial Spine (in Gluteal Region) and move into the Lesser Sciatic Notch. The Tendon (and not muscle) of Obturator Internus passes through the Lesser Sciatic Notch.