Reliability of the acetabular teardrop as a landmark

J. E. Robb, L. A. Rymaszewski, H. B. Bentley, P. T. Donnan

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This study investigated the effect of tilt and observer reliability on radiographic measurements of the position of a prosthetic acetabular cup in seven dry bone pelves using the teardrop as a landmark. Coronal or sagittal tilt of more than five degrees was easily recognisable and there was effectively no observer variation in the measurements up to this limit. In addition, 90 out of 100 randomly selected antero-posterior pelvic radiographs from an outpatient department were not significantly rotated and 93 demonstrated a clearly defined teardrop. Measurements about the teardrop on routine radiographs are therefore sufficiently accurate to allow assessment of prosthetic position.

Original languageEnglish
Pages (from-to)181-185
Number of pages5
JournalSurgical and Radiologic Anatomy
Volume13
Issue number3
DOIs
Publication statusPublished - Sep 1991

Keywords

  • Anatomy
  • Pelvis
  • Radiology

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