title: MR imaging of extrasynovial inflammation and impingement about the knee.
abstract: The knee has unique anatomy regarding the relationship between the synovial and capsular layers, with interposed fat pads at certain locations. The extrasynovial impingement and inflammation syndromes about the knee are underdiagnosed and should be included in the differential diagnosis of anterior knee pain. MR imaging is the best imaging modality for evaluation of the anatomy and disorders of these extrasynovial compartments.
authors.affiliation: Department of Radiology, San Diego Medical Center, University of California, 200 West Arbor Drive, San Diego, CA 92126, USA; Department of Radiology, Hospital do Coração (HCor) and Teleimagem, Desembargador Eliseu Guilherme, 147, Paraíso, São Paulo 04004-030, Brazil. Electronic address: grandohgb@gmail.com.
authors.forename: Higor
authors.initials: H
authors.lastname: Grando
authors.affiliation: Department of Radiology, San Diego Medical Center, University of California, 200 West Arbor Drive, San Diego, CA 92126, USA; Department of Radiology, VA San Diego Healthcare System, 3350 La Jolla Village Drive, MC 114, San Diego, CA 92161, USA.
authors.forename: Eric Y
authors.initials: EY
authors.lastname: Chang
authors.affiliation: Department of Radiology, San Diego Medical Center, University of California, 200 West Arbor Drive, San Diego, CA 92126, USA; Department of Radiology, VA San Diego Healthcare System, 3350 La Jolla Village Drive, MC 114, San Diego, CA 92161, USA.
authors.forename: Karen C
authors.initials: KC
authors.lastname: Chen
authors.affiliation: Department of Radiology, San Diego Medical Center, University of California, 200 West Arbor Drive, San Diego, CA 92126, USA; Department of Radiology, VA San Diego Healthcare System, 3350 La Jolla Village Drive, MC 114, San Diego, CA 92161, USA.
authors.forename: Christine B
authors.initials: CB
authors.lastname: Chung
mesh_terms: D002062:Bursitis / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007719:Knee Joint / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D020370:Osteoarthritis, Knee / Q000473:pathology*; D046788:Patellofemoral Pain Syndrome / Q000473:pathology*; D013585:Synovitis / Q000473:pathology*
keywords: Adhesive capsulitis knee; Hoffa disease; Iliotibial band syndrome; Knee fat pad impingement; Patellofemoral friction syndrome; Pericruciate fat pad; Prefemoral fat pad; Quadriceps fat pad