1、if the penile cutting injury is caused by self-harm, psychological counseling and psychological stability assessment should be carried out first during treatment; then consider the treatment of the local trauma. Because even if the repair surgery is successful, there are still nearly5% of the patients will self-injure again. The survival rate of reimplanted amputated penis is relatively high because the penile tissue has a stronger anti-ischemic ability than other organs. This may be able to maintain survival; if the amputation site is kept at low temperature, it can slow down the function of intracellular enzymes, reduce the cell's need for sugar, oxygen, and nutrition, thereby extending the ischemic survival time. Wei reported the successful reimplantation of the heat ischemia time16h of the penis and low temperature ischemia24h of the penis. It is generally believed that heat ischemia exceeds24h, cold ischemia exceeds72h, the survival of reimplantation is impossible.
2、penile reimplantation surgery should be performed using microsurgical techniques, which can significantly improve the survival rate of reimplantation and restore sexual intercourse ability. First, the debridement should be done carefully, as much viable tissue as possible should be retained, the structures to be anastomosed at both ends should be recognized, suprapubic cystostomy. In order to make the reimplanted penis stable, the Foley's catheter should be inserted into the external urethral orifice first. The reconnection starts from the urethral anastomosis, and then10“0” non-absorbable nylon thread to anastomose the corpus cavernosum artery; the tunica albuginea is used4“0” Dexon thread continuous suture, making it tightly sealed; followed by anastomosis of the dorsal artery, vein, and dorsal nerve. In order to protect the vascular nerve bundle, use5“0” Dexon thread sutured the superficial fascia, and finally sutured the skin. If the dorsal artery of the penis could not be anastomosed, at least the dorsal vein of the penis should be anastomosed, and sufficient venous return is an important factor for survival. In the past, the amputation of the penis was only performed by simple suture of the urethra, tunica albuginea, and skin, also known as 'spongy body docking'. After surgery, lymphedema of the penis, necrosis of the glans penis, or sexual function affected often occurred. For the amputated and non-vital distal penile defect, only penile reconstruction surgery could be performed.