The defender, who joined Liverpool from Notts County Ladies in May 2017, made five appearances this term.
Reds manager Scott Rogers said: “The injury was causing Amy discomfort and affecting her when playing so we have taken the decision to get it sorted now so that she is back for next season.
“She has been excellent over the last couple of months and proved what a fantastic footballer she is, as well as a top defender.
“Having spoken to the medical team, getting the injury operated on now will help Amy in the long term. We have seen the character shown by Amy when having far more serious injuries so we have no doubts that she will come back better and stronger than ever.