Positive PCL line sign
Citation, DOI & article data
The positive PCL line sign is an indirect sign of anterior cruciate ligament (ACL) tear based on secondary changes of the posterior cruciate ligament (PCL) on MRI images. A line tangent to the upper border of the PCL should normally intersect the medullary cavity of the distal femur, if it does not, it is suggestive of an ACL tear.
- 1. Schweitzer ME, Cervilla V, Kursunoglu-Brahme S et-al. The PCL line: an indirect sign of anterior cruciate ligament injury. Clin Imaging. 1992;16 (1): 43-8. Pubmed citation