Deep lateral femoral notch sign explained
In radiology, the deep lateral femoral notch sign is a finding on a lateral radiograph that is considered an indirect sign of a torn anterior cruciate ligament (ACL).[1] [2] It is an abnormal deepening of the lateral condylopatellar sulcus from an osteochondral impaction fracture.[1] [3] A depth greater than 1.5 mm is a reliable sign of a torn ACL.[1]
Notes and References
- Pao . D. G. . The lateral femoral notch sign . Radiology . 219 . 3 . 800–801 . 2001 . 11376273 . 10.1148/radiology.219.3.r01jn12800.
- Cobby . M. J. . Schweitzer . M. E. . Resnick . D. . The deep lateral femoral notch: An indirect sign of a torn anterior cruciate ligament . Radiology . 184 . 3 . 855–858 . 1992 . 1509079 . 10.1148/radiology.184.3.1509079.
- Yu . J. S. . Bosch . E. . Pathria . M. N. . McAndless . M. . Mishra . D. . Daniel . D. . Clopton . P. . Resnick . D. . 10.1007/BF02615790 . Deep lateral femoral sulcus: Study of 124 patients with anterior cruciate ligament tear . Emergency Radiology . 2 . 3 . 129 . 1995 . 20538659 .