title: Association of knee bone bruise frequency with time postinjury and type of soft tissue injury.
abstract: This study correlated the frequency of bone bruises with soft tissue injuries in the knee and examined bruise frequency as a function of time postinjury. Magnetic resonance imaging of 1546 patients revealed bone bruises in 19% of patients without an associated meniscal or ligamentous injury. For those patients presenting with at least one meniscoligamentous injury, the frequency of bruising was 60% at 0 to 4 weeks, 42% at 4 to 10 weeks, and 31% at 10 to 26 weeks postinjury. The frequency of bruising varied with the presence of concomitant injuries, with the greatest frequency of bruises (78%) observed in patients with anterior cruciate ligament injuries.
authors.affiliation: Kettering University, Mechanical Engineering Department, 1700 W Third Ave, Flint, MI 48504, USA.
authors.forename: P J
authors.initials: PJ
authors.lastname: Atkinson
authors.forename: T G
authors.initials: TG
authors.lastname: Cooper
authors.forename: S
authors.initials: S
authors.lastname: Anseth
authors.forename: N E
authors.initials: NE
authors.lastname: Walter
authors.forename: R
authors.initials: R
authors.lastname: Kargus
authors.forename: R C
authors.initials: RC
authors.lastname: Haut
mesh_terms: D000328:Adult; D003288:Contusions / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D007718:Knee Injuries / Q000453:epidemiology*; D008297:Male; D008824:Michigan / Q000453:epidemiology; D012189:Retrospective Studies; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D017695:Soft Tissue Injuries / Q000453:epidemiology*; D013223:Statistics as Topic; D013997:Time Factors