Magnetic resonance imaging of the hip: Detection of labral and chondral abnormalities using noncontrast imaging

Hip Arthroscopy Improves Symptoms Associated with FAI in Selected Adolescent Athletes

“…Chondral and labral disorders were evaluated using high-resolution, noncontrast MRI based on evidence from our institution regarding the equivalence or superiority to MR arthrograms for evaluation of labral disorders [50,60] ( Fig. 1), whereas bony pathoanatomy was assessed using plain radiographs and noncontrast CT scans with 3-D reconstruction reformatted images (Fig.…”

High resolution noncontrast MRI of the hip

“…More recently, Mintz et al evaluated noncontrast MRI in 92 patients, assessing not only the individual grading of the articular cartilage by a modified Outerbridge scale, but also providing interclass correlation with a weighted kappa score. Using arthroscopy as a standard, 88-92% of cases were noted within one grade of arthroscopy, yielding an accuracy in the cartilage over the femoral head of 87% with a weighted kappa of 0.8 (P < 0.001), and an accuracy over the acetabulum of 88% with a weighted kappa of 0.7 (P < 0.001) (17).…”

Delamination Cysts: A Predictor of Acetabular Cartilage Delamination in Hips with a Labral Tear

“…Investigators of several studies suggest arthritic changes or acetabular cartilage loss can be identified by preoperative MRI, but these studies do not specifically address cartilage delamination or nonarthritic cartilage injuries. Mintz et al [32] did a retrospective review of 92 patients who underwent MRI of the hip and subsequent hip arthroscopy to evaluate the ability of noncontrast MRI with a small pixel size to identify arthritic changes of the acetabulum. Overall, normal cartilage could be differentiated from abnormal cartilage with a sensitivity of 92% and a specificity of 80%.…”

“…Hip arthroscopy is useful in the treatment of labral tears, but labral excision alone does not completely resolve hip pain in patients with concomitant cartilage injury, with success rates of only 21% reported [5,17,35,42]. Microfracture of the acetabulum or acetabular rim resection can be performed in conjunction with the arthroscopy, but in either case the chondral delamination will alter the prognosis and postoperative rehabilitation protocol [6,8,11,28,32,39,40,42]. An open femoroacetabular osteoplasty with resection of as much as 1 cm of the rim of the acetabulum to remove the site of chondral delamination can be planned if preoperatively it is recognized the labral tear is associated with acetabular cartilage delamination [35].…”