title: Knee synovial cyst presenting as iliotibial band friction syndrome.
abstract: We present the case of a 28-year-old competitive runner with iliotibial band (ITB) friction syndrome associated with a synovial cyst. Magnetic resonance imaging (MRI) did not demonstrate a fluid collection. However, open exploration revealed a large cyst beneath the ITB arising from the capsule of the knee proximal to the lateral meniscus. The cyst disappeared on extension. The pre-operative MRI scan may have revealed the cyst, if it had been taken with the knee flexed.
authors.affiliation: The Institute of Orthopaedics, The Norfolk and Norwich University Hospital, Colney Lane, Norwich NR4 7UZ, UK. mattcosta@hotmail.com
authors.forename: M L
authors.initials: ML
authors.lastname: Costa
authors.forename: T
authors.initials: T
authors.lastname: Marshall
authors.forename: S T
authors.initials: ST
authors.lastname: Donell
authors.forename: H
authors.initials: H
authors.lastname: Phillips
mesh_terms: D000328:Adult; D012090:Cumulative Trauma Disorders / Q000175:diagnosis*; D005206:Fascia Lata / Q000473:pathology*; D006801:Humans; D007719:Knee Joint / Q000473:pathology; D008297:Male; D010146:Pain / Q000209:etiology; D013581:Synovial Cyst / Q000150:complications / Q000175:diagnosis* / Q000601:surgery