[Arthroscopic treatment of chondral lesions of the ankle joint. Evidence-based therapy].

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Abstract

[Indexed for MEDLINE] 16. Eur J Radiol. 2009 Apr;70(1):155-64. doi: 10.1016/j.ejrad.2008.01.008. Epub 2008 Mar 4. Indirect MR-arthrography in osteochondral autograft and crushed bone graft with a collagen membrane--correlation with histology. Streitparth F(1), Schöttle P, Schell H, Lehmkuhl L, Madej T, Wieners G, Duda GN, Schröder RJ. Author information: (1)Klinik für Strahlenheilkunde, Charité, Campus Virchow-Klinikum, Humboldt-University, Berlin, Germany. florian.streitparth@charite.de OBJECTIVE: To analyze the spectrum of findings in indirect MR-arthrography following osteochondral autograft transfer system (OATS) and crushed bone graft using a magnetic resonance imaging (MRI) scoring and grading system in relation to histology as the standard of reference. MATERIALS AND METHODS: Iatrogenic lesions were set at ovine condylar facets (n=6/group), treated with OATS or crushed bone graft. 1.5 T MRI was performed 6 months after surgery using PD-weighted (w fat saturated (fs) fast spin echo (FSE), T1-w 2D, and 3D fs gradient echo (GE) sequences 30 min. after i.v. Gd-DTPA administration and passive joint exercise. The repair tissue was evaluated by two independent radiologists. The MR findings were compared to histology. RESULTS: In all cases, MRI and histologic grading correlated well and showed significant superior repair in OATS at 6 months (p