- Potential subjects undergoing arthroscopy will have their electronic medical record reviewed by the study team to look for exclusion criteria. If the subject is excluded, then they will be added to the Screening Log with date and reason for their exclusion. If all inclusion criteria are met, then the subject will be approached in the Regional Anesthesia area for their consent. A copy of the consent will be given to the study subject. The other informed consent document will be maintained by the study team in the research files.