The magnetic resonance imaging appearance of individual structures of the posterolateral knee. A prospective study of normal knees and knees with surgically verified grade III injuries

Robert F. LaPrade, Thomas J. Gilbert, Timothy S. Bollom, Fred Wentorf, Gregory Chaljub

    Research output: Contribution to journalArticle

    179 Citations (Scopus)

    Abstract

    The purpose of this study was to contrast the magnetic resonance imaging appearance of uninjured components of the posterolateral knee with that of injured structures, and to assess the accuracy of magnetic resonance imaging in identifying posterolateral knee complex injuries. Thin-slice coronal oblique T1-weighted images through the entire fibular head were used to identify the posterolateral structures in seven uninjured knees. The appearance of corresponding grade III injuries to these structures was identified prospectively in 20 patients and verified at the time of surgical reconstruction. The sensitivity, specificity, and accuracy of imaging for the most frequently injured posterolateral knee structures in this series were as follows: iliotibial band-deep layer (91.7%, 100%, and 95%), short head of the biceps femoris-direct arm (81.3%, 100%, and 85%), short head of the biceps femoris-anterior arm (92.9%, 100%, and 95%), midthird lateral capsular ligament-meniscotibial (93.8%, 100%, and 95%), fibular collateral ligament (94.4%, 100%, and 95%), popliteus origin on femur (93.3%, 80%, and 90%), popliteofibular ligament (68.8%, 66.7%, and 68%), and the fabellofibular ligament (85.7%, 85.7%, and 85.7%). Magnetic resonance imaging of the knee was accurate in the identification of these injuries.

    Original languageEnglish (US)
    Pages (from-to)191-199
    Number of pages9
    JournalAmerican Journal of Sports Medicine
    Volume28
    Issue number2
    StatePublished - 2000

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    Knee
    Magnetic Resonance Imaging
    Prospective Studies
    Collateral Ligaments
    Wounds and Injuries
    Ligaments
    Arm
    Knee Injuries
    Femur
    Head
    Sensitivity and Specificity
    Hamstring Muscles

    ASJC Scopus subject areas

    • Public Health, Environmental and Occupational Health
    • Orthopedics and Sports Medicine
    • Physical Therapy, Sports Therapy and Rehabilitation

    Cite this

    The magnetic resonance imaging appearance of individual structures of the posterolateral knee. A prospective study of normal knees and knees with surgically verified grade III injuries. / LaPrade, Robert F.; Gilbert, Thomas J.; Bollom, Timothy S.; Wentorf, Fred; Chaljub, Gregory.

    In: American Journal of Sports Medicine, Vol. 28, No. 2, 2000, p. 191-199.

    Research output: Contribution to journalArticle

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    abstract = "The purpose of this study was to contrast the magnetic resonance imaging appearance of uninjured components of the posterolateral knee with that of injured structures, and to assess the accuracy of magnetic resonance imaging in identifying posterolateral knee complex injuries. Thin-slice coronal oblique T1-weighted images through the entire fibular head were used to identify the posterolateral structures in seven uninjured knees. The appearance of corresponding grade III injuries to these structures was identified prospectively in 20 patients and verified at the time of surgical reconstruction. The sensitivity, specificity, and accuracy of imaging for the most frequently injured posterolateral knee structures in this series were as follows: iliotibial band-deep layer (91.7{\%}, 100{\%}, and 95{\%}), short head of the biceps femoris-direct arm (81.3{\%}, 100{\%}, and 85{\%}), short head of the biceps femoris-anterior arm (92.9{\%}, 100{\%}, and 95{\%}), midthird lateral capsular ligament-meniscotibial (93.8{\%}, 100{\%}, and 95{\%}), fibular collateral ligament (94.4{\%}, 100{\%}, and 95{\%}), popliteus origin on femur (93.3{\%}, 80{\%}, and 90{\%}), popliteofibular ligament (68.8{\%}, 66.7{\%}, and 68{\%}), and the fabellofibular ligament (85.7{\%}, 85.7{\%}, and 85.7{\%}). Magnetic resonance imaging of the knee was accurate in the identification of these injuries.",
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