[Shang Ring circumcision versus conventional circumcision for redundant prepuce or phimosis: a meta analysis].
OBJECTIVE
To compare the effect and safety of Shang Ring circumcision with those of conventional circumcision in the treatment of redundant prepuce or phimosis.


METHODS
We retrieved the randomized controlled trials on Shang Ring circumcision and conventional circumcision for the treatment of redundant prepuce or phimosis published at home and abroad. Relevant data were selected according to the Cochrane Handbook for Systematic Reviews by two reviewers after quality evaluation of the included trials, and the statistical software RevMan 5.0 was used for meta analysis.


RESULTS
Totally 8 randomized controlled trials with 2277 cases were included in this study. Compared with conventional circumcision, Shang Ring circumcision showed a shorter operation time (SMD = -5.82, 95% CI [ -7.39, -4.24], P<0.00001), less intraoperative blood loss (SMD = -3.28, 95% CI [ -3.47, -3.09], P<0.00001), lower rate of infection (OR = 0.44, 95% CI [0.26, 0.72], P=0.001), lower rate of postoperative bleeding (OR =0.05, 95% CI [0.02, 0.12], P<0.00001), higher rate of satisfaction with the postoperative penile appearance (OR=12.72, 95% CI [1.30, 124.56], P=0.03), lower intraoperative pain score (SMD = -3.32, 95% CI [ -3.50, -3.14], P<0.00001), and lower 24-hour-postoperative pain score (SMD = -3.28, 95% CI [ - 3.47, - 3.00], P<0.00001), but longer wound healing time (OR=1.46, 95% CI [1.03, 1.90], P<0.00001).


CONCLUSIONS
In comparison with conventional circumcision, Shang Ring circumcision has the advantages of shorter operation time, fewer complications, mild pain, and higher rate of satisfaction with the postoperative penile appearance. However, more high-quality randomized controlled trials with large samples are required to lend further support to our findings.
Department of Urology/Key Laboratory for Urological Diseases of Gansu Province/Clinical Center for Nephro-urology of Gansu Province, The Second Hospital of Lanzhou University, Lanzhou, Gansu 730030, China.
Er-Long
EL
Xiao
Hui
H
Ding
Yong-Qian
YQ
Li
Zhi-Ping
ZP
Wang
D002944:Circumcision, Male / Q000379:methods*; D006801:Humans; D008297:Male; D010688:Phimosis / Q000601:surgery*; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome