title: Incidence of graft rupture 15 years after bilateral anterior cruciate ligament reconstructions: a case-control study.
abstract: Between 1993 and 1994, 891 patients underwent primary anterior cruciate ligament (ACL) reconstruction. A total of 48 patients had undergone bilateral ACL reconstruction and 42 were available for review. These patients were matched to a unilateral ACL reconstruction control group for gender, age, sport of primary injury, meniscal status and graft type. At 15-year follow-up a telephone interview with patients in both groups was performed. The incidence of further ACL injury was identified through structured questions and the two groups were compared for the variables of graft rupture or further ACL injury, family history of ACL injury, International Knee Documentation Committee (IKDC) subjective score and activity level. There were 28 male and 14 female patients with a mean age of 25 years (13 to 42) at the time of first ACL injury. Subsequent further ACL injury was identified in ten patients (24%) in the bilateral ACL reconstruction study group and in nine patients (21%) in the unilateral ACL reconstruction control group (p = 0.794). The mean time from bilateral ACL reconstruction to further ACL injury was 54 months (6 to 103). There was no significant difference between the bilateral ACL reconstruction study group and the matched unilateral ACL reconstruction control group in incidence of further ACL injury (p = 0.794), family history of ACL injury (p = 0.595), IKDC activity level (p = 0.514), or IKDC subjective score (p = 0.824). After bilateral ACL reconstruction the incidence of graft rupture and subjective outcomes were equivalent to that after unilateral ACL reconstructions.
authors.affiliation: North Sydney Orthopaedic and Sports Medicine Centre, The Mater Clinic, Suite 2, 3 Gillies St, Wollstonecraft, Sydney, New South Wales 2065, Australia.
authors.forename: M
authors.initials: M
authors.lastname: Goddard
authors.forename: L
authors.initials: L
authors.lastname: Salmon
authors.forename: A
authors.initials: A
authors.lastname: Waller
authors.forename: E
authors.initials: E
authors.lastname: Papapetros
authors.forename: L A
authors.initials: LA
authors.lastname: Pinczewski
mesh_terms: D000293:Adolescent; D000328:Adult; D000070598:Anterior Cruciate Ligament Injuries; D059549:Anterior Cruciate Ligament Reconstruction; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D007593:Joint Instability / Q000453:epidemiology* / Q000209:etiology; D007718:Knee Injuries / Q000150:complications* / Q000453:epidemiology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009517:New South Wales / Q000453:epidemiology; D011475:Prosthesis Failure / Q000209:etiology / Q000639:trends*; D012008:Recurrence; D012189:Retrospective Studies; D012421:Rupture; D013997:Time Factors; D055815:Young Adult
keywords: ACL; Anterior cruciate ligament; Bilateral; Graft rupture; Knee; Reconstruction