Episotomy extended posteriorly beyond perineal body injuring structure posterior to it, which structure is injured?: (A) External anal sphincter, (B) Ishiocavernous, (C) Bulbospongiosus, (D) Urethral sphincter
Answer is A. Episotomy extended posteriorly beyond perineal body will injure External anal sphincter. Extension of the incision in median episiotomy involve the rectal mucosa. structures attaching on perineal body Bulbospongiosus: anteriorly, surrounding urethra and vaginal opening Transverse perinei: laterally External anal spincter: posteriorly, surrounding anal opening.