The aim of the study is to investigate the feasibility of a training intervention in patients with femoroacetabular impingement syndrome (FAIS).

The aim of this study is to investigate the feasibility of a 12-weeks (progressive) exercise program in patients with FAIS. Feasibility is evaluated on the recruitment strategy, patient adherence to the exercises and their experiences with and motivation for performing exercises. Furthermore, the investigators wish to investigate the variation of data before and after the exercise program to help estimate a suitable sample size for a future randomized controlled trial.

Inclusion Criteria:

1. Patients aged 18-50 years old
2. Diagnosed with FAIS according to the Warwick agreement
3. Patients having cam morphology should have an alpha angle of > 55 degrees on an anterior-posterior radiograph.
4. Patients having pincer should have a lateral centre edge angle of >39 degrees on an anterior-posterior radiograph.
5. Lateral joint space width should be >3 mm.
6. Body mass index is below 30.
7. Motivated for participation in a 12 week training program with 8 physical attendances.

Exclusion Criteria:

1. Received physiotherapist-led treatment in the past 3 months,
2. Previous hip surgery in included hip or other major hip injury,
3. Systemic conditions e.g. rheumatoid arthritis, cancer,
4. Chronical pain syndromes,
5. Unable to perform testing procedures,
6. Unable to attend a 12-week treatment program or baseline and follow-up assessments
7. Contraindications to radiographs (e.g. pregnancy)
8. Unable to read or understand questionnaires and/or instructions

Pilot study with few participants.