Complex sentence: The term balloon angioplasty is commonly used to describe percutaneous coronary intervention, which describes the inflation of a balloon within the coronary artery to crush the plaque into the walls of the artery.
Split into simpler sentences: The term balloon angioplasty is commonly used to describe percutaneous coronary intervention. Strictly speaking, balloon angioplasty describes the inflation of a balloon within the coronary artery to crush the plaque into the walls of the artery.