There are downsides or risks to any medical procedure and it is up to healthcare providers to educate patients on healthcare options and associated risks. The interviewer wants to know that you are capable of educating a patient on this procedure.
"While there are benefits, there are also some downsides to getting a penile implant. For any surgical procedure, there is the risk of infection. Every implant, at some point, is going to malfunction, which means it will have to be removed and then replaced. This leads to another surgical procedure and more surgical risks. The devices are filled with saline. It's the same saline as one would use for intravenous medication, so it's very safe when the patient experiences mechanical failure. If the device does leak, it will not be harmful to them."
"With rigid implants, over time the layer of scar tissue will form around the cylinders. This causes the pseudo-capsule to become looser, which will cause the erection to loosen up and will wobble."
"One common complaint is auto-inflation. This sometimes happens when the patient deflates the implant and then the implant will inflate by itself. This results in an increase in fluid in the reservoir. Over time, the increased pressure around the reservoir will push the fluid back into the cylinders and the patient will complain that an erection has occurred."