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You have undergone an arthroscopic examination of one or more joints in your chest.

A joint is a movable connection between two or more bones in the body. An arthroscopy first involves making a small incision in the skin. A thin tube is advanced through this incision. There is a camera at the top of the tube. The camera transmits images of the inside of the joint to a screen. Instruments such as forceps and scissors can be inserted into the joint through other small incisions. With this kind of arthroscopy, the inside of the joint can be viewed and assessed for any changes.

The chest is part of the torso, located between the neck and the abdomen. The rib cage, also called the thoracic cage or the bony thorax, consists of the thoracic vertebrae, the ribs, and the sternum. The thoracic vertebrae of the spine are located at the back of the chest, the sternum at the front, with the ribs connecting the thoracic vertebrae and the sternum. Most ribs are connected to the thoracic vertebrae and the sternum via joints. The collarbone is also connected to the sternum via a joint at the top of the chest.