Abstract: Objective To explore the surgical method and effect evaluation of Progressive pedicled skin flap transfer combined with modified devine procedure in the treatment of concealed penis in children. Methods 80 patients with concealed penis admitted to Heze Municipal Hospital from July 2020 to July 2021 were retrospectively analyzed.Among them,44 cases were treated with progressive flap transfer technique combined with modified Devine operation(Experimental group);36 cases were treated with modified Devine operation(Control group).All operations were performed by the same surgeon.The operation effect was evaluated by observing and recording the operation time,blood loss in operation,penile length improvement,penile prepuce edema time,skin flap necrosis rate and postoperative satisfaction.Results Experimental group and control group of patients had successful operations,The length of penis extension,the time edema of penis foreskin and surgical satisfaction in experimental group were(2.67±0.29)cm,(55.09±5.52)days,and 95.5%,respectively,significantly better than the control group(2.12±0.36)cm,(70.22±7.73)days,and(75.0%),respectively,the difference was statistically significant( P <0.05).The time of operation,intraoperative bleeding and postoperative infection rate of patients in the experimental group were(66.61±7.45) min,(5.64±1.35)ml,2.3% ,respectively;compared with control group[(63.58±8.07)min,(5.75±1.40)ml,2.8%],the difference was not statistically significant ( P >0.05). Conclusion The surgical method of progressive pedicled skin flap transfer combined with modified Devine procedure is simple and effective,and it is worthy of clinical application in the treatment of concealed penis in children.

Key words: concealed penis, modified Devine operation, foreskin flap； progressive transfer