title: [Differential diagnosis of bone marrow edema of the knee joint].
abstract: Bone marrow edema of the knee joint is a frequent clinical picture in MR diagnostics. It can be accompanied by symptoms and pain in the joint. Diseases that are associated with bone marrow edema can be classified into different groups. Group 1 includes vascular ischemic bone marrow edema with osteonecrosis (synonyms: SONK or Ahlbäck's disease), osteochondrosis dissecans, and bone marrow edema syndrome. Group 2 comprises traumatic or mechanical bone marrow edema. Group 3 encompasses reactive bone marrow edemas such as those occurring in gonarthrosis, postoperative bone marrow edemas, and reactive edemas in tumors or tumor-like diseases. Evidence for bone marrow edema is effectively provided by MRI, but purely morphological MR information is often unspecific so that anamnestic and clinical details are necessary in most cases for definitive disease classification.
authors.affiliation: Institut für Radiologie, Waldviertelklinikum Horn/Osterreich. Martin.Breitenseher@aon.at
authors.forename: M J
authors.initials: MJ
authors.lastname: Breitenseher
authors.forename: J
authors.initials: J
authors.lastname: Kramer
authors.forename: M E
authors.initials: ME
authors.lastname: Mayerhoefer
authors.forename: N
authors.initials: N
authors.lastname: Aigner
authors.forename: S
authors.initials: S
authors.lastname: Hofmann
mesh_terms: D001855:Bone Marrow Diseases / Q000175:diagnosis*; D004487:Edema / Q000175:diagnosis*; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods; D007592:Joint Diseases / Q000175:diagnosis*; D007719:Knee Joint / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D017410:Practice Guidelines as Topic; D010818:Practice Patterns, Physicians'; D017695:Soft Tissue Injuries / Q000175:diagnosis