Obstetric Anal Sphincter Injury [OASI]

  • Swati JhaEmail author
  • Abdul Sultan


Obstetric Anal Sphincter Injury has seen an increasing incidence in the past few years which may be related to improved detection and diagnosis. The risk factors for OASI are not modifiable and therefore strategies aimed at reducing incidence during childbirth as well as adequate diagnosis of the grade of tear and its appropriate management reduces adverse sequela. These are not guaranteed to avoid faecal incontinence in later life but the commonest cause of litigation relates to failure to detect tears at the time of delivery.


OASI Obstetric anal sphincter injury Faecal incontinence Severe perineal trauma Buttonhole tears 


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Obstetrics and GynaecologyJessop Wing, Sheffield Teaching Hospitals NHS TrustSheffieldUK
  2. 2.Croydon University HospitalLondonUK

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