Episotomy extended posteriorly beyond perineal body injuring structure posterior to it, which structure is injured?
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.
External anal sphincter
Ishiocavernous
Bulbospongiosus
Urethral sphincter
NEET Jan 2020