Articular cartilage assessment in femoroacetabular impingement (FAI) is challenging. Recent studies on T2* relaxation time mapping suggest the technique may be useful in diagnosing cartilage damage. The purpose of this case report is to describe how quantitative T2*-mapping may improve cartilage assessment of the acetabulum in patients with FAI. MR arthrography was performed at 3 Tesla (T) using intra-articular Gadolinium and a T2* mapping protocol. Data from the acetabular cartilage were separated from femoral head cartilage data and then superimposed on a flattened, map-projection representation of the patient's acetabulum. The areas of unhealthy cartilage observed at the time of arthroscopy-including debonding and delamination-were seen preoperatively at the same anatomic locations as areas of decreased T2* values. T2* mapping values provided a non-invasive assessment of the acetabular articular cartilage. A flattened acetabular map projection allowed for anatomic visualization of areas of unhealthy cartilage. Level of evidence: Level IV.
|Translated title of the contribution||MR Imaging with T2*- mapping for improved acetabular cartilage assessment in femoro acetabular impingement-a case report with arthroscopic correlation|
|Number of pages||1|
|Journal||Revue de Chirurgie Orthopedique et Traumatologique|
|State||Published - Dec 1 2014|