Protruding anterior medial meniscus–An indirect sign of posterior cruciate ligament deficiency.
European Journal of Radiology Jan 17, 2018
Parkar AP, et al. - Researchers here investigated whether PROTruding of the Anterior Medial Meniscus (PROTAMM) could be an indirect sign of PCL deficiency by comparing PROTAMM to passive posterior tibial sagging (PSS) for chronic PCL rupture on routine MRI. In patients with PCL rupture, a mean PROTAMM of 3.6mm was found. Researchers consider this sign, after knee injury in an otherwise normal medial meniscus, as a promising indirect sign of PCL deficiency compared to PPS. The sensitivity of routine non-weight bearing MRI in identifying PCL deficient knees could be improved with the implementation of this sign in clinical practice.
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