• Der Unfallchirurg · May 2021

    Case Reports

    [A rare cause of an acutely locked knee joint: superior patellar dislocation].

    • Johannes Glasbrenner, Thorben Briese, Michael J Raschke, Elmar Herbst, and Christoph Kittl.
    • Klinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, 48147, Münster, Deutschland. johannes.glasbrenner@ukmuenster.de.
    • Unfallchirurg. 2021 May 1; 124 (5): 407-411.

    AbstractThe case of a 56-year-old male patient with locking of the knee in extension without trauma is presented. Patient history, clinical examination and radiographs confirmed a superior dislocation of the patella. Closed reduction led to full weight bearing with free range of motion without further complaints. Knowledge of this uncommon cause of a locked knee joint leads to immediate treatment avoiding complex imaging modalities, such as computed tomography (CT) or magnetic resonance imaging (MRI). No further treatment was necessary in the majority of the cases published in the literature.

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