Phimosis is the inability to retract the foreskin over the glans penis. The foreskin of adults is typically retractable over the glans. When non-erect, it is quite flaccid and contained within the prepuce (foreskin, or sheath). Dunne recommends the glans, shaft, their crease, and the foreskin. Circumcision is the removal of the foreskin from the human penis. Circumcision is the surgical removal of part or all of the foreskin from the penis. Phimosis is a condition where the foreskin of an adult cannot be retracted properly. The highly innervated mucocutaneous zone of the penis occurs near the tip of the foreskin. Circumcision is the removal of the foreskin, either partially or completely. Results when circumcision or foreskin reconstruction are done are the same. As of 2012 no successful technique to reconstruct a circumcised foreskin had been published. The circumcision consists of three procedures, the first being the cutting of the foreskin. A scalpel is used to detach the foreskin. A Danish survey found that the mean age of first foreskin retraction is 10.4 years. A balloon-like swelling under the foreskin may occur with urination.