title: MRI of the annular ligament of the elbow: review of anatomic considerations and pathologic findings in patients with posterolateral elbow instability.
abstract: OBJECTIVE
  The annular ligament is one of the major stabilizers of the proximal radioulnar joint. However, it is one of the least studied structures in the lateral elbow because of imaging challenges and low pathologic incidence. This article will examine the anatomy of the annular ligament, its biomechanics, and its functional importance. Eight surgically proven cases of annular ligament abnormality in patients with posterolateral and nursemaid elbow, along with the associated findings, are presented.
  
  
  CONCLUSIONS
  Adequate understanding of the anatomy and familiarity with the associated injuries that can be seen in annular ligament displacement or rupture will improve detection of annular ligament abnormality.
authors.affiliation: 1 Department of Radiology, Maimonides Medical Center, Brooklyn, NY.
authors.forename: Serena
authors.initials: S
authors.lastname: Mak
authors.forename: Luis S
authors.initials: LS
authors.lastname: Beltran
authors.forename: Jenny
authors.initials: J
authors.lastname: Bencardino
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Orr
authors.forename: Laith
authors.initials: L
authors.lastname: Jazrawi
authors.forename: Luis
authors.initials: L
authors.lastname: Cerezal
authors.forename: Javier
authors.initials: J
authors.lastname: Beltran
mesh_terms: D004551:Elbow Joint / Q000473:pathology*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007593:Joint Instability / Q000209:etiology* / Q000473:pathology*; D008023:Ligaments, Articular / Q000002:abnormalities* / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008953:Models, Anatomic
keywords: annular ligament; elbow cadaveric dissection; lateral collateral ligament complex; posterolateral elbow instability