Patient characteristics cannot predict the long-term effect of an intra-articular bupivacaine and corticosteroid injection in patients with femoroacetabular impingement: A retrospective cohort study.

Background: To evaluate predictors for effect of an intra-articular (IA) bupivacaine and corticosteroid injection in patients with femoroacetabular impingement syndrome (FAIS).

Methods: All patients between 18 and 50 years old with FAIS who received an intra-articular (IA) bupivacaine and corticosteroid injection between 2016 and 2019 were eligible for this retrospective study. Two groups were made, the non-arthroscopy group (patients for whom conservative treatment with physiotherapy and an IA bupivacaine and corticosteroid injection was sufficient) and the arthroscopy group (patients who needed an arthroscopy because conservative treatment and an IA bupivacaine and corticosteroid injection failed).