Magnetic resonance imaging is the method of choice in characterizing the various disorders and assessing the full extent of osseous, chondral and soft tissue involvement. MR imaging can exquisitely demonstrate joint effusions, synovial proliferations, articular cartilage abnormalities, subchondral bone, ligaments, muscles and juxta articular soft tissues. It has been successfully used in imaging disease processes of the hip because of its optimal spatial resolution. We concluded that MRI has become the imaging study of choice for diagnosing most hip disorders when the plain radiographs are non diagnostic. The real-time imaging feature of sonography is of particular interest because some disorders of muscles, tendons and joints are better- or in some cases, only-seen dynamically, that is, during motion of the extremity, muscle contraction, probe compression, or position change of the patient. Sonography should be the first imaging modality used to evaluate snapping hip. Dynamic sonographic studies can help to identify the structure involved in extra-articular snapping hip by showing the abnormal displacement of this structure with hip motion.