This is a birth defect of the penis. The defect involves the urethra. The urethra is the tube that connects the bladder to the outside of the body so that urine can exit.

With hypospadias, the opening of the urethra develops on the underside of the penis. Normally, the opening is at the tip. Sometimes, other defects of the penis are also present. For example, the penis may have an abnormal downward curve. This is called chordee.

The Male Reproductive System
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Hypospadias occurs when the penis does not develop normally while the child is in the womb. This may happen when hormones do not stimulate the penis to develop normally. Often, the cause is unknown.