Final answer:
Arthroscopy is the procedure that examines the inside of a joint.
Step-by-step explanation:
The procedure that examines the inside of a joint is arthroscopy. Arthroscopy is a minimally invasive surgical technique that involves inserting a small, thin instrument called an arthroscope into the joint through a small incision. This allows the surgeon to visualize the joint interior and perform various procedures, such as removing damaged tissue or repairing injuries.