| Knee joint anterior malalignment and patellofemoral osteoarthritis: an MRI study. | |
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MedLine Citation:
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PMID: 21956698 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVES: To evaluate patellofemoral congruency measurements on MRI and correlate the findings with severity of ipsilateral osteoarthritis. METHODS: We retrospectively reviewed 650 consecutive knee MRI examinations from 622 patients divided into two age groups: ≤50 and >50 year-old. The femoral sulcus angle (SA) and depth (SD), lateral patellar displacement (LPD), lateral patellofemoral angle (LPFA), tibial tubercle-trochlear groove (TT-TG) distance and Insall-Salvati index as well as the grade of focal cartilage defects (ranging from I to IV) in the patellofemoral region were assessed in each subject on axial and sagittal fat-saturated intermediate-w MR images. RESULTS: A significant difference exists between normal and knees with patellofemoral joint osteoarthritis regarding SA (p = 0.0002 and <0.0001), SD (p = 0.0004 and <0.0001), LPD (p = 0.0014 and 0.0009) and LPFA (p = 0.0002 and 0.0003) in both age groups (≤50 and >50 respectively). Significant correlation was found between grading of cartilage defects and SA (rho = 0.21, p = 0.0001 and 0.443, <0.0001), SD (rho = -0.198, p = 0.0003 and -0.418, <0.0001), LPD (rho = 0.176, p = 0.0013 and 0.251, 0.0002) and LPFA (rho = -0.204, p = 0.0002 and -0.239, 0.0005) in both age groups. CONCLUSIONS: Knee joint anterior malalignment is multivariably associated with patellofemoral osteoarthritis. KEY POINTS : • MRI is an excellent method to evaluate knee alignment and articular cartilage damage. • Significant associations exist between alignment parameters and osteoarthritis of the patellofemoral joint. • The "sulcus angle" and "sulcus depth" were the most valuable osteoarthritic markers. |
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Authors:
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Nikolaos Tsavalas; Pavlos Katonis; Apostolos H Karantanas |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-29 |
Journal Detail:
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Title: European radiology Volume: - ISSN: 1432-1084 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-9-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9114774 Medline TA: Eur Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Medical Imaging, University Hospital, University of Crete, Heraklion, 711 10, Crete, Greece. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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