MR-IMAGING OF HIP DISORDERS

Magnetic resonance (MR) imaging has been applied to the study of a var iety of hip disorders, principally the evaluation of avascular necrosi s. The authors reviewed their experience with MR imaging of a variety of pediatric and adult hip diseases. Attention to the details of the i maging technique is essential for maximizing the diagnostic potential of MR imaging in the work-up of hip disease. Specific protocols that i ncorporate surface coil imaging, oblique imaging planes, and alternati ve pulse sequences are the foundation of successful hip studies. Gradi ent-echo imaging is essential for evaluating cartilaginous disorders, particularly in pediatric patients. For patients to benefit from the d iagnostic capabilities of MR imaging, an appreciation of the unique in formation it provides must be communicated to referring physicians. In addition, an awareness of the atypical and unique MR appearances of c ertain hip disorders is necessary for accurate interpretation.