title: Symptomatic ring-shaped lateral meniscus.
abstract: Abnormalities of the lateral meniscus in humans are a long-known fact. Three different types of discoid menisci are described in Watanabe's atlas, being considered as congenital malformations. For the second time in the literature, a fourth ring-shaped type of discoid lateral meniscus was described as an incidental finding in this Journal by Monllau et al. in 1998. The present case is the first description of a symptomatic, ring-shaped lateral meniscus with a concomitant, recurrent cyst at the lateral aspect of a child's knee.
authors.affiliation: Department of Orthopaedics, University Hospital, Nijmegen, University of Nijmegen, The Netherlands.
authors.forename: M P
authors.initials: MP
authors.lastname: Arnold
authors.forename: A
authors.initials: A
authors.lastname: Van Kampen
mesh_terms: D001182:Arthroscopy; D002648:Child; D015897:Comorbidity; D003560:Cysts / Q000175:diagnosis / Q000453:epidemiology / Q000473:pathology; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis / Q000453:epidemiology / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008592:Menisci, Tibial / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery; D013581:Synovial Cyst / Q000175:diagnosis / Q000473:pathology / Q000601:surgery