👉 Costophrenic is a type of bone that separates the kidneys from the bladder, and it's located in the lower part of the abdomen. It helps to prevent urine from escaping into the bladder when you urinate, which can cause discomfort or even blockage if left untreated. The costophrenic bone is made up of two bones called the pelvis and the pubis, which are connected by a ligament called the pubocervical ligament. The costophrenic bone