Final answer:
The obturator nerve is not typically included in the adductor canal but may need to be blocked for medical procedures involving the medial thigh or knee to provide adequate anesthesia.
Step-by-step explanation:
The nerve that is not usually included in the adductor canal but still requires blockade during certain medical procedures is the obturator nerve. The adductor canal is a narrow passageway located deep within the thigh, and it typically contains the femoral artery, the femoral vein, and the saphenous nerve. When performing surgical procedures on the medial aspect of the thigh or knee, the obturator nerve may need to be blocked in addition to the nerves contained within the adductor canal to ensure adequate anesthesia.