| Femoro-acetabular impingement: can indirect MR arthrography be considered a valid method to detect endoarticular damage? A preliminary study. | |
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MedLine Citation:
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PMID: 20041388 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To assess the effectiveness of indirect Magnetic Resonance arthrography (i-MRa) in the detection of chondral and labral lesions related to femoro-acetabular impingement (FAI) a series of 21 hip joints in 17 patients with a clinical diagnosis of FAI were examined either with standard MR imaging, i-MRa and direct-MR arthrography (d-MRa). Sensitivity and accuracy of i-MRa in detecting chondral, labral and tardive lesions were calculated and compared with standard MR. The agreement in detecting endoarticular damage between i-MRa and d-MRa and the interobserver agreement was assessed by K statistic (p<0.05). Finally the presence of trocanteric bursitis was evaluated. I-MRa showed higher values of both sensivity and accuracy than standard MR in detecting chondral damage, with an increase to 92% for the first item and 95% for the second. The same was noticed in labrum evaluation with an increase to 88% and 90% respectively. The level of agreement between i-MRa and d-MRa in detection of chondral lesions was excellent, substantial for the labral damage and absolute for early osteoarthritic changes. An excellent interobserver agreement resulted in detection of both chondral and labral damages with i-MRa. In 6 hips (28,5%) we also found the presence of peri-trochanteric soft tissue inflammation that indicated the possibility of extrarticular involvement in FAI. Indirect-MRa can be considered a valid method of assessing endoarticular damage related to FAI, in comparison to d-MRa. It should be performed instead of standard MR if d-MRa is not available. |
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Authors:
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Grazia Pozzi; Paola Stradiotti; Cleber Garcia Parra; Luigi Zagra; Sandro Sironi; Alberto Zerbi |
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Publication Detail:
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Type: Journal Article; Validation Studies |
Journal Detail:
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Title: Hip international : the journal of clinical and experimental research on hip pathology and therapy Volume: 19 ISSN: 1724-6067 ISO Abbreviation: Hip Int Publication Date: 2009 Oct-Dec |
Date Detail:
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Created Date: 2009-12-30 Completed Date: 2010-04-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9200413 Medline TA: Hip Int Country: Italy |
Other Details:
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Languages: eng Pagination: 386-91 Citation Subset: IM |
Affiliation:
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Universit? degli Studi di Milano Bicocca, Milano, Italy. graziapozzi@gmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Arthrography Bursitis / pathology Cartilage, Articular / injuries, pathology* Female Hip Joint / pathology*, physiopathology Humans Image Interpretation, Computer-Assisted Magnetic Resonance Imaging* Male Middle Aged Movement Observer Variation Osteoarthritis, Hip / pathology Pilot Projects Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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