Group B:Periarticular local infiltrating drug (cocktail) consists of ropivacaine + epinephrine + dexamethasone + magnesium sulfate + sodium bicarbonate

Efficacy of a modified cocktail formulation on analgesia and early functional recovery after total knee replacement: a prospective, double-blind randomized controlled trial

A randomized controlled trial of modified cocktail formulation on analgesia and early functional recovery after TKA