title: Correlation between trochlear dysplasia and anterior cruciate ligament injury.
abstract: PURPOSE. To evaluate the correlation between trochlear dysplasia and anterior cruciate ligament (ACL) injury METHODS. Magnetic resonance images (MRIs) of 95 knees in 54 males and 36 females aged 4 to 74 (mean, 28) years who had anterior knee pain and suspected ligamentous injury were reviewed. The MRIs were independently reviewed by 2 musculoskeletal radiologists on 2 occasions. According to the Dejour classification, trochlear dysplasia was classified into types A, B, C, and D. Intra-articular injuries/ disorders of the patients included patellofemoral osteoarthritis, chondromalacia patella, meniscal tears, and ligamentous injuries. Intra- and inter-observer variability was calculated. RESULTS. 58 of the knees had trochlear dysplasia, 38 of which were Dejour type A. The intra- and inter-observer variability was good to excellent (Kappa=0.76-1). ACL tear was the most common injury (n=13). No ACL injury occurred in patients without trochlear dysplasia. The odds of having sustained an ACL injury were 8.8 fold greater in Dejour type-A knees than in non-type-A knees (p=0.023). CONCLUSION. Dejour type-A trochlear dysplasia was associated with ACL injuries.
authors.affiliation: Department of Musculoskeletal Radiology, University Hospitals of Leicester, Leicester, United Kingdom.
authors.forename: Rajesh
authors.initials: R
authors.lastname: Botchu
authors.forename: Haron
authors.initials: H
authors.lastname: Obaid
authors.forename: W J
authors.initials: WJ
authors.lastname: Rennie
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000070598:Anterior Cruciate Ligament Injuries; D002648:Child; D002675:Child, Preschool; D005260:Female; D005269:Femur / Q000002:abnormalities*; D006801:Humans; D007718:Knee Injuries / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D057071:Patellofemoral Joint / Q000002:abnormalities*; D012737:Sex Factors; D055815:Young Adult
keywords: anterior cruciate ligament; knee injuries