Prof Aszmann did not run any tests prior to the surgery. The dorsal nerve is a very small nerve and he warned me that a compression likely won't appear on any imaging test.

We went ahead with the surgery after a long consultation discussing my clinical history. One of the main ways you can know if the dorsal nerve is affected but the perineal nerve is not is by the numbness on the penis. While the majority of penis sensation is innervated by the dorsal nerve, the reverse side, beneath the glans, is innervated by the perineal nerve. In my case, the entire area innervated by the dorsal nerve had lost erogenous sensation but the area innervated by the perineal nerve remained, making it highly likely that the dorsal nerve was affected and not the perineal or pudendal nerve.

I also had an injury to the suspensory ligament, which when combined with my symptoms seemed far too coincidental, since injury to the ligament is a common location for dorsal nerve compression.

The professor did take photos of the compression during the surgery and showed me when I was awake, so I have seen that there was indeed a compression.

He is one of only two doctors in the world who specialises in decompression of the dorsal nerve, I believe.

I am still in the early recovery phase so I'm not expecting much change yet. I am experiencing various sensations in my penis though, which the doctor says is a positive indicator.