A Trial of Levator Muscle Blocks Following Posterior Colporrhaphy Surgery to Reduce Post-operative Pain.

Inclusion Criteria: * Any woman over the age of 18 years with a capacity to give informed consent who are undergoing vaginal prolapse surgery including a posterior colporrhaphy may be included in the study. Exclusion Criteria: * Any woman who is a non-English speaker, does not have ability to provide consent, has a cardiac arrhythmia, liver disease, myasthenia gravis, bleeding diathesis or adverse reaction / allergy to anesthetic will be excluded. Women that are also having vaginal mesh excisions at the time of prolapse repair or those that will undergo subsequent surgery in the follow up period will be excluded.