title: "Bone bruises" on magnetic resonance imaging evaluation of anterior cruciate ligament injuries.
abstract: Magnetic resonance imaging of the knees of 98 consecutive patients with clinically diagnosed anterior cruciate ligament injuries revealed 47 patients (48%) with focal signal abnormalities consistent with the diagnosis of a "bone bruise." Seventy-one percent of the magnetic resonance images taken within 6 weeks of injury demonstrated a bone bruise, whereas no scans done longer than 6 weeks after injury showed a bruise (P < 0.0001). Also significant was the tendency for lesions to be located in the lateral compartment (P < 0.0001). In the sagittal plane, lesions were most likely to be in the middle third of the lateral femoral condyle and the posterior third of the lateral tibial plateau (P < 0.0001). In 31 patients evaluated arthroscopically, there was no correlation between the presence or location of a bone bruise and articular alterations or meniscal tears observed at surgery.
authors: University of Wisconsin, Department of Surgery, Madison.
authors: B K
authors: BK
authors: Graf
authors: D A
authors: DA
authors: Cook
authors: A A
authors: AA
authors: De Smet
authors: J S
authors: JS
authors: Keene
mesh_terms: D016118:Anterior Cruciate Ligament / Q000473:pathology; D000070598:Anterior Cruciate Ligament Injuries; D001182:Arthroscopy; D003288:Contusions / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007718:Knee Injuries / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D012189:Retrospective Studies