The intertwining pathways in biology and biomechanics in fermoro-acetabular impingement (FAI) patients

The biomechanical principles and the biological consequences in femoroacetabular impingement (FAI) are poorly understood in detail. We report our experience in diagnosis, surgical treatment and outcome of more than 50 FAI patients. An algorithm for the diagnosis and treatment of FAI is developed. Recent data confirm the impact of molecular MRI to detect early cartilage damage and the efficiency of gait analysis for monitoring. Surgical elimination of the causative biomechanical deformity is crucial for midterm clinical success, which is strongly presented after 6 months already. Open surgical dislocation of the hip provides an excellent overview allowing different treatment modalities.