MS-3624
An 80-year-old man is recuperating after undergoing a right total hip replacement. During a session with the physiotherapists, it is observed that his right foot is dragging on the ground while walking.
Upon conducting a neurological examination of his lower limbs, it is found that his left leg is completely normal. However, his right leg has 0/5 power of dorsiflexion and knee flexion, a reduced ankle and plantar reflex, and no sensation over the lateral calf, sole, and dorsum of the foot.
What is the nerve lesion that has occurred?