title: Deltoid contracture: MR imaging features.
abstract: OBJECTIVE
  To describe the magnetic resonance imaging (MRI) features of deltoid contracture and compare these findings with the operative and histological findings and to determine the utility of MRI for diagnosis and treatment planning.
  
  
  METHODS
  Retrospective review of clinical and imaging in six patients with deltoid contracture, as well as the operative and histological findings of four operated patients.
  
  
  RESULTS
  Magnetic resonance imaging clearly demonstrated the intramuscular fibrous bands of the deltoid as a homogeneously hypointense area with distinctive margins on T1-, T2- and T2*-weighted images. Operative findings were exactly consistent with the findings observed by MRI.
  
  
  CONCLUSIONS
  Deltoid contracture is best evaluated with MRI which facilitates visualization of the intramuscular fibrous bands being pathognomonic of this entity and may provide information useful in treatment planning.
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ogawa
authors.forename: M
authors.initials: M
authors.lastname: Takahashi
authors.forename: T
authors.initials: T
authors.lastname: Naniwa
mesh_terms: D000328:Adult; D003286:Contracture / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular / Q000009:adverse effects; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal; D012189:Retrospective Studies; D012782:Shoulder