First-line Treatment for Femoroacetabular Impingement Syndrome

There is sparse evidence on the effectiveness of first-line treatment in patients with femoroacetabular impingement syndrome (FAIS) regarding clinical- and cost-effectiveness. The goal of this randomized controlled trial is to compare the clinical effectiveness and cost-effectiveness of a supervised strength exercise intervention to usual first-line care in patients with FAIS. The main hypothesis it aims to investigate are: 1. 6-months of supervised strength exercise intervention is superior (i.e., at least 6 points, on a scale from 0-100) to usual care in improving hip related quality of life in patients with FAIS at the end of intervention. 2. 6-months of supervised strength exercise intervention is cost-effective compared to usual first-line care at 12-month follow-up in patients with FAIS. 3. High exercise adherence and dosage will be superior to low exercise adherence and dosage in mediating clinical effectiveness in patients with FAIS.