Editorial Commentary: Gadolinium Intra-Articular Contrast Magnetic Resonance Imaging Is Not Required for Every Patient Undergoing Hip Arthroscopy, but Contrast Magnetic Resonance Imaging Plus Computed Tomography With 3-Dimensional Reconstruction Are Essential for Patients Requiring Revision.

Abstract

For arthroscopic hip surgeons, accurate identification of symptomatic pathology is required. Gadolinium-contrast magnetic resonance arthrography (MRA) is an important imaging option but not necessarily for every patient. Contrast carries some risks, and for patients with acute pathology, effusion may mitigate against the need for contrast. In addition, higher field 3T magnetic resonance imaging shows exceptional detail, comparable sensitivity, and superior specificity to MRA. However, in the revision setting, contrast is indicated to delineate recurrent labral tear versus postsurgical changes, as well as to best show the degree of capsular deficiency. In addition, in the revision setting, computed tomography scan without contrast with 3-dimensional reconstruction also is indicated to evaluate for acetabular dysplasia, surgical over-resection on the acetabular and femoral side, and femoral version. Each patient should be carefully evaluated; MRA with intra-articular contrast is a valuable tool, but not always required.