Penile prostheses are of two types, malleable and hydraulic. Malleable prostheses have the advantage of being smaller and having less material, which reduces complications and are cheaper. In the case of hydraulic prostheses, they have the advantage of achieving a more natural erection than in the case of flexible prostheses, but they are associated with more complications due to the volume of the prostheses and the devices to be implanted. They are also a little more expensive.
