What is the coronal sulcus and what should we pay attention to?

The coronal sulcus is an important part of the male penis, and because the coronal sulcus is a concave position, if men do not pay attention to the health of their penis, it is easy to cause the coronal sulcus to have a large amount of dirt residue on it, which can cause corresponding glans diseases.

The coronal sulcus is the common name for the neck of the penis. The penis of an adult man is 5 to 9 cm long under normal conditions, and the length can double when erect. The glans penis is the enlarged part of the front end of the penis. There is a sagittal urethral opening at the tip of the head, and the slightly thinner part behind the head is the neck of the penis. The body of the penis is cylindrical and hangs from the front and bottom of the pubic symphysis, which is the movable part. The root of the penis is hidden deep in the skin of the scrotum and perineum and is fixed to the inferior pubic and ischial branches, which is the fixed part. The penis is composed of two corpus cavernosum and a urethral corpus cavernosum, surrounded by fascia and skin.

The coronal sulcus of the penis is located between the glans penis and the body of the penis. Its anatomical characteristics are relatively flat and smooth, with relatively fixed mucosa and low mobility. The mechanism of forming the coronary groove is: ① The front ends of the left and right corpus cavernosum gradually taper when embedded in the concave surface of the glans penis from the front end of the urethral corpus cavernosum, thus creating an acute angle between the glans penis and the body of the penis. The surface of the acute angle is covered by fascial tissue and skin to form a flat band of a certain width, the coronary groove; ② The superficial fascia of the penis terminates at the posterior edge of the coronary groove. There is only deep fascia under the coronary sulcus mucosa, and the deep fascia is closely connected to the coronary sulcus mucosa, so the mucosa of the coronary sulcus is relatively fixed and has much less mobility than the mucosa of the inner foreskin.

Under normal circumstances, the epidermis of the coronal sulcus is thin, tender, smooth and soft. In any case, if new hairs are found here, they are pathological. Because the coronary sulcus is easily exposed and new hairs are easily discovered, "growing out" or "discovering" new hairs in the coronary sulcus are symptoms that patients can easily and directly report.