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The dorsal nerve of the penis may be desensitized at a location just proximal to the surgical site. With the bull restrained, the penis should be manually extended and a towel clamp should then be placed under the dorsal apical ligament. Alternatively, a gauze tourniquet may be placed around the free portion of the penis to aid in penile extension. With the dorsal aspect of the penis thoroughly cleansed, 2–4 ml of 2% lidocaine hydrochloride should be infused subcutaneously across the dorsum of the penis proximal to the lesion [9].

Alternatively, the dorsal nerve of the penis may be desensitized as it passes over the ischial arch for penile anesthesia and relaxation. The skin associated with the penile body and located 10 cm ventral to the anus and 2.5 cm from midline is infiltrated with 2–4 ml of 2% lidocaine hydrochloride using a small‐gauge needle (22–25 gauge). A 20‐gauge, 4‐cm needle is then inserted through the desensitized skin and advanced for 5–7 cm to contact the pelvic floor. Aspiration ensures that the needle is not in the dorsal artery of the penis. The needle is then withdrawn approximately 1 cm and the area infiltrated with 20–30 ml of 2% lidocaine hydrochloride. The procedure is repeated on the opposite side of the penis. Analgesia and paralysis of the penis will occur within 20 minutes and should last for one to two hours [1].