“…Demographic data extracted were: first author, year of study, study type (randomised control trials, cohort, case controlled or quasi-experimental) and design (including whether retrospective or prospective, single or multiple centres, and if consecutive patients were enrolled), number of patients, primary anaesthetic given to both intervention and control groups, local anaesthetic type used in the treatment group, and study quality as assessed using the Downs and Black (D&B) score. 14 Based on the recently published core outcome sets for patients undergoing MLLA from a Delphi consensus process, 6 the following outcomes were selected:…”