Femoroacetabular impingement (FAI) is a common cause of hip pain. The abnormal bony morphology in the acetabulum, the femoral head, or both will lead to impingement and soft tissue damage in the femoroacetabular joint. Classically described as abutment between femoral-head neck (FHN) junction and the acetabulum, it can occur during normal repetitive movement of the hip of abnormal bony conformity or during extreme range of motion (ROM) of a normal hip. As such, different type of FAI have been described over the years: Cam, Pincer, and mixed. When impingement continues and is not treated, labrum and cartilage will be damaged. When the damage continues even further, osteoarthritis of the hip can manifest. Different causes have been implicated over the years such as sex, genetics, age, race, and trauma, for example. Diagnosis of FAI syndrome necessitates a triad of classical complaints on history, positive physical exam findings, and imagery findings. Also, tool like diagnostic intra-articular injections can help diagnosis and assessment or the surgical prognosis. Over the years, different treatment options have been proposed. Nowadays, patient will usually undergo a trial of nonoperative physiotherapy with activity modifications and pain management. When the conservative treatment fails, hip arthroscopy has evolved to take place as the gold standard of treatment even though many other options are still possible. Patients can expect good outcomes from hip arthroscopy and a full return to activities.