![]() ![]() The overall success rate was 67% for all patients with subchondral edema/cystic change compared with 85% in the control group (P =. The mean mHHS was inferior for all patients with subchondral edema/cystic change (79.9 ± 18.7 vs 86.6 ± 12.5 P =. ![]() Thirty-one of 34 patients (91%) had a grade 4 full-thickness cartilage lesion at the time of diagnostic arthroscopy. Two patients who underwent total hip replacement were excluded in the outcome score comparison. Thirty-six patients (18 men, 18 women) with a mean age of 41 years (range, 19-67 years) had subchondral edema, with or without the presence of cystic acetabular changes, at minimum 2-year follow-up (range, 24-60 months). Minimum 2-year outcomes were compared using prospectively collected Hip Outcome Score (HOS) activities of daily living and sport subscales as well as the modified Harris Hip Score (mHHS). A matched cohort of patients without evidence of subchondral edema or cyst was identified. Lesions were characterized by grade using an established classification system and were correlated with arthroscopic articular cartilage changes. The records of all patients who underwent arthroscopic hip surgery for FAI at a single institution between 20 were reviewed for subchondral edema/cyst on preoperative MRI. (1) To correlate MRI findings of subchondral acetabular edema/cystic change with arthroscopy grading of articular cartilage and (2) to determine whether postoperative outcome was worse for patients with subchondral edema/cystic change compared with a matched control group. However, there remains a subset of hips with relatively maintained joint space but with acetabular subchondral edema and cystic change with unknown outcome on magnetic resonance imaging (MRI). The outcome for arthroscopic treatment of femoroacetabular impingement (FAI) can worsen with increasing arthritis. ![]()
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