Oct 15, 2024 · MRI. Features of posterior cruciate ligament tears include 1,2: PCL usually remains contiguous (~70%) although there may be complete or partial ligamentous disruption. absent PCL replaced by high T1 and T2 signal. enlarged and swollen PCL: >7 mm AP diameter of the vertical portion on sagittal imaging is indicative of a tear

May 1, 2006 · Recent advancements in the understanding of PCL function and the improved detection of PCL and coexisting injuries afforded by MRI have improved the orthopaedic surgeon’s ability to address the biomechanical deficits resulting from PCL injuries. 4

Nov 23, 2012 · There is little in the radiology literature regarding the MRI appearance of a torn posterior cruciate ligament (PCL). The purpose of this study was to describe the MRI appearance of surgically proven PCL tears and to emphasize previously unreported signs.

Nov 19, 2024 · The posterior cruciate ligament (PCL) is one of the two cruciate ligaments that stabilize the knee joint. The ligament is intracapsular but extrasynovial and is, on average, 38 mm in length and 13 mm in width.

Grade 1: Partial tear (sprain) from stretching of the ligament fibers and minimal laxity ((1-5 mm of posterior translation of the tibia relative tothe femur). Grade 2: Complete tear of the PCL but no other significant injuries (6-10 mm of posterior tibial translation).

The PCL is normally seen on MR as a well defined continuous band of low signal intensity; Partial thickness tears appear as ligament thickening and intrasubstance increased signal; Complete tears are seen as ligamentous disruption and have an abnormal contour

MRI has become the gold standard in the diagnosis of PCL tears. MRI can identify meniscal, ligamentous, tendon, cartilaginous, and bony injuries, which distinguishes it from other imaging modalities.

a torn posterior cruciate ligament (PCL). The purpose of this study was to describe the MRI appearance of surgically proven PCL tears and to emphasize previously unreported signs.

Although differentiation between complete and partial-thickness PCL tears by MRI criteria alone is more problematic, complete tears are more likely to show focal areas of discontinuity and partial tears are more likely to show at least some intact fibers.

The PCL is usually injured as the result of stretching deformation; on MRI, the ligament maintains continuity as a single structure with apparent thickening. On sagittal T2-weighted images, an anteroposterior diameter of 7 mm or more is highly suggestive of a torn PCL.