 Reportedly some of these men later fathered children.If reattachment is not an option (such as the penis not being reattached long after 24 hours), doctors can reconstruct a penis from muscle and skin grafted from another part of the body like the forearm.However, a penile implant is needed for an erection to be possible, as the reconstructed penis would look strange and would either not be able to ejaculate, or ejaculate with less force.