Para-acetabular periarthritis calcarea: Its radiographic manifestations

Akira Kawashima, Sadayuki Murayama, Toshiyuki Ohuchida, Walter J. Russell

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


On retrospective reviews of radiographs, periarthritis calcarea was distinguished from os acetabula by interval radiographic progression and regression. Among 59 men and 51 women, there were 137 instances of para-acetabular calcifications and ossifications, which were morphologically classified as 58 discrete, 58 amorphous, and 21 segmented types. Correlations with other radiographic abnormalities, symptoms, signs, and laboratory abnormalities were sought, but not established. Out of 93 serially imaged opacities, 90 changed, including 37 of the 40 instances (92.5%) of the discrete type and 53 instances (100%) of the amorphous and segmented types-due to periarthritis calcarea. At least 43 of 90 densities were newly developed. Mean age at first detection was 47.7 years. Three of the discrete densities were unchanged and represented os acetabula. Thus, recognition of para-acetabular periarthritis calcarea is not only of academic importance; it can facilitate proper treatment as well.

Original languageEnglish (US)
Pages (from-to)476-482
Number of pages7
JournalSkeletal Radiology
Issue number7
StatePublished - Oct 1988


  • Calcific tendinitis
  • Hydroxyapatite deposition disease
  • Os acetabula
  • Periarthritis calcarea
  • Soft tissues, calcification
  • Tendon, calcification

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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