title: Coccygeal retroversion.
abstract: METHODS
  A retrospective review of a case of coccygodynia caused by a previously unreported coccygeal morphology.
  
  
  OBJECTIVE
  To draw attention to a previously undiagnosed pathology.
  
  
  BACKGROUND
  This case adds to the recently described variants of coccygeal anatomy.
  
  
  METHODS
  The authors present the case of a 42-year-old woman with intractable coccygodynia and a retroverted coccyx.
  
  
  RESULTS
  The histologic examination of the resected specimen after coccygectomy revealed a bony lesion covered with thick fibrous tissue and evidence of mature adipocytes within trabecular spaces. (The latter was described in a supplementary report as an intraosseous lipoma.)
  
  
  CONCLUSIONS
  A retroverted coccyx and adventitious bursa represent a pathoanatomy not formally reported on in the literature. This type of coccyx that is symptomatic may not respond to the traditional prolonged period of conservative management.
authors.affiliation: Department of Orthopaedics, West Middlesex University Hospital, London, UK. wilsonxxx@btinternet.com
authors.forename: Lucy V
authors.initials: LV
authors.lastname: Dennell
authors.forename: Soosai
authors.initials: S
authors.lastname: Nathan
mesh_terms: D000328:Adult; D003050:Coccyx / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D010148:Intractable Pain / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography; D012189:Retrospective Studies