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  • Title: Second-look arthroscopic findings and clinical outcomes after microfracture for osteochondral lesions of the talus.
    Author: Lee KB, Bai LB, Yoon TR, Jung ST, Seon JK.
    Journal: Am J Sports Med; 2009 Nov; 37 Suppl 1():63S-70S. PubMed ID: 19843658.
    Abstract:
    BACKGROUND: Arthroscopic microfracture is frequently used to repair osteochondral lesions of the talus. However, despite the popularity of this technique, no study has been conducted on cartilage repair after microfracture by second-look arthroscopy. PURPOSE: The purpose of the present study was to evaluate cartilage repair in osteochondral lesions of the talus by second-look arthroscopy and to compare arthroscopic findings with clinical outcomes 12 months postoperatively. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Second-look arthroscopies were performed in 20 ankles of 19 patients at 12 months postoperatively. Arthroscopic findings were classified using the Ferkel and Cheng staging system, and cartilage repair was assessed using the International Cartilage Repair System (ICRS). Clinical outcomes were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale. RESULTS: According to the Ferkel and Cheng staging at second-look arthroscopy, 7 of the 20 ankles (35%) showed incomplete healing (stage D). In terms of ICRS overall repair grades, 8 ankles (40%) were abnormal (grade III). Mean AOFAS scores for Ferkel and Cheng stages A to C (n = 13) and stage D (n = 7) were 88.5 and 82.0 points, and those for ICRS repair grades I and II (n = 12) and grade III (n = 8) were 88.7 and 82.5, respectively. Good correlations were found between AOFAS scores and Ferkel and Cheng stages and ICRS grades. Overall, 90% of ankles achieved an excellent or good AOFAS score of over 80 points. CONCLUSION: Second-look arthroscopic findings at 12 months postoperatively after microfracture for osteochondral lesions of the talus revealed that 40% of lesions were incompletely healed. Nevertheless, the majority of patients achieved a good clinical outcome. Furthermore, postoperative clinical scores were found to be correlated with ICRS repair grades.
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