Clamps should be checked periodically to insure that the opening is no more than 3.0 mm, and sent for repair or discarded if they do open wider. A key step in Mogen circumcision is the safe placement of the clamp. To push the glans back out of the way, the surgeon's thumb and index finger pinch the foreskin below the dorsal hemostat. The Mogen clamp is then slid across the foreskin from dorsal to ventral, following along the same angle as the corona. The hollow side of the clamp faces the glans.
More foreskin is removed dorsally than ventrally.
Before locking the Mogen clamp shut, the glans is manipulated to be sure it is free of the clamp's jaws. If it is, the clamp is locked. Note the triangular shape of the foreskin to be excised since the corona angle is followed. Once locked, the foreskin is excised flush with the flat surface of the clamp with a 10-blade scalpel. The clamp is left on for a few moments to insure hemostasis, then unlocked and removed.