Abstract #2404

MRI of the Post-Operative Hip Following Arthroscopic Repair: What are the Imaging Characteristics of Labrum Re-Tear and Capsular Complications?

Douglas L Handley¹, Joseph Y Tang¹, Andrea M Spiker², and Donna G Blankenbaker¹

¹Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States, ²Orthopedic Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States

Synopsis

After acetabular labrum repair an intact repair, labrum re-tear, adhesions, and capsular disruption can have variable appearance on MRI. Some signs have been described as evidence of labral re-tear and adhesions. We retrospectively evaluated 25 hip MRIs in patients who later underwent revision arthroscopy utilizing these signs. Results were compared to arthroscopic findings. Fluid signal within the labrum demonstrated a high specificity for re-tear. Signs of adhesion were often identified accurately but could be imitated by synovitis. Capsular disruption was also identified with high sensitivity.

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