Fracture of the penis is a surgical emergency that results from blunt trauma to the erect penis.
The technique of penile cavernosography involves injection of contrast medium into the corpora cavernosa by direct injection. A series of fluoroscopic images is subsequently obtained, with the presence of contrast leakage across the tunica albuginea being confirmatory of the condition; this will also help localize the exact location of the tear. Note that the procedure is not without complications; priapism, allergic reactions and fibrosis of the corpus cavernosa have been observed.
From the ED Management perspective, we need to give them adequate analgesia (Meds, Cold Compression) and get Urology ASAP. Most authorities agree that urgent surgical exploration and repair is the first-line treatment in these patients. Overall, surgical repair has an excellent outcome.
4. Amer, Tarik, et al. "Penile Fracture: A Meta-Analysis." Urologia internationalis96.3 (2016): 315-329.