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Potential pitfalls of a double PCL sign

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Abstract

The double posterior cruciate ligament (PCL) sign is seen on a midline sagittal MR image of the knee as a low-signal-intensity linear band paralleling the antero-inferior part of the PCL. Although the sign has a high specificity for a displaced bucket-handle tear of the medial meniscus, it can be mimicked by several normal and abnormal structures in the intercondylar region. Familiarity with these variants and identifying the other features supportive of meniscal injury will help to make a confident diagnosis of bucket-handle tear of the medial meniscus

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Authors and Affiliations

  1. Department of Radiology, Derriford Hospital, Plymouth, PL6 8DH, UK

    Nanda Venkatanarasimha

  2. Department of Accident and Emergency, Royal Gwent Hospital, Newport, NP20 2UB, UK

    A. Kamath

  3. Department of Radiology, University Hospital of Wales, Cardiff, CF14 4XW, UK

    K. Mukherjee & S. Kamath

Authors
  1. Nanda Venkatanarasimha
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  2. A. Kamath
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  3. K. Mukherjee
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  4. S. Kamath
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Correspondence to S. Kamath.

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Venkatanarasimha, N., Kamath, A., Mukherjee, K. et al. Potential pitfalls of a double PCL sign. Skeletal Radiol 38, 735–739 (2009). https://doi.org/10.1007/s00256-009-0654-5

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  • DOI: https://doi.org/10.1007/s00256-009-0654-5

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