title: Relationship between bone bruise volume and the presence of meniscal tears in acute anterior cruciate ligament rupture.
abstract: OBJECTIVE
  To determine whether there is a relationship between the size of the bone bruise volume after an acute anterior cruciate ligament (ACL) rupture and the presence of meniscal tears in the medial and lateral compartment.
  
  
  METHODS
  Following Institutional Review Board approval, 50 patients with an acute ACL rupture and MRI imaging within 30 days of injury were identified. Two musculoskeletal radiologists evaluated the lateral and medial menisci and graded them as one of the following: no meniscal tear, tear of one meniscus (medial or lateral) or tear of both menisci (medial and lateral). Sagittal T2 fat-suppressed images were used to calculate bone bruise volume. The relationship between bone bruise volume and the presence of a meniscus tear was calculated.
  
  
  RESULTS
  Forty-three (86%) patients had a bone bruise, 16 (32%) patients had no tear, 7 (14%) patients had lateral meniscus tear, 13 (26%) patients had medial tear and 14 (28%) patients had medial and lateral tears. There was a statistically significant difference in femoral bone bruise volume when comparing no meniscal tear to medial and lateral tears as well as when comparing medial or lateral tears to medial and lateral tears.
  
  
  CONCLUSIONS
  There is a statistically significant relationship between femoral bone bruise volume and the presence of meniscal tears in ACL injury, especially in the setting of medial and lateral pathology.
  
  
  METHODS
  Retrospective cohort study, Level III.
authors.affiliation: Department of Orthopaedic Surgery, University of Pittsburgh, Kaufman Building Suite 1011, 3471 Fifth Avenue, Pittsburgh, PA, 15213, USA.
authors.forename: Kenneth D
authors.initials: KD
authors.lastname: Illingworth
authors.forename: Daniel
authors.initials: D
authors.lastname: Hensler
authors.forename: Bethany
authors.initials: B
authors.lastname: Casagranda
authors.forename: Camilo
authors.initials: C
authors.lastname: Borrero
authors.forename: Carola F
authors.initials: CF
authors.lastname: van Eck
authors.forename: Freddie H
authors.initials: FH
authors.lastname: Fu
mesh_terms: D000293:Adolescent; D000328:Adult; D000070598:Anterior Cruciate Ligament Injuries; D001265:Athletic Injuries / Q000175:diagnosis; D002648:Child; D003288:Contusions / Q000175:diagnosis*; D005260:Female; D005269:Femur / Q000293:injuries / Q000473:pathology*; D006801:Humans; D007718:Knee Injuries / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D012189:Retrospective Studies; D012421:Rupture / Q000601:surgery; D013977:Tibia / Q000293:injuries / Q000473:pathology*; D000070600:Tibial Meniscus Injuries; D055815:Young Adult