You’d think that since surgeons are capable of micro-surgery, tying together blood vessels almost too small to see, that a simple circumcision ought to be easy enough to get right. But often, circumcisions are botched. A classic result is a skin bridge, in which some of the skin from the side of the penis attaches to the corona. The attachment heals, and becomes permanent, unless corrected by additional surgery later on. Of course the surgery to detach a skin bridge is trivial, but many boys and men opt not to do it.