The PCL line: an indirect sign of anterior cruciate ligament injury.
A new sign of anterior cruciate ligament (ACL) tear based on secondary changes of the posterior cruciate ligament (PCL) is described. Thirty-one patients with magnetic resonance (MR) examinations of the knee suspicious for ACL injury and 50 normal controls were examined. In each patient a line was drawn adjacent and parallel to the posterior margin of the distal portion of the PCL and was extended proximally. A positive PCL line did not intersect the medullary cavity of the femur. A positive line correctly predicted ACL injury in 19 of 22 patients.
Schweitzer
M E
ME
Department of Radiology, Veterans Administration Medical Center, Philadelphia, PA.
Cervilla
V
V
Kursunoglu-Brahme
S
S
Resnick
D
D
D000293:Adolescent; D000328:Adult; D000368:Aged; D016118:Anterior Cruciate Ligament / Q000473:pathology*; D000070598:Anterior Cruciate Ligament Injuries; D002648:Child; D006801:Humans; D007718:Knee Injuries / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008875:Middle Aged