A Novel Method of Determining Acetabular Component Size to Guide Explant in Revision Hip Arthroplasty

Fiachra O Deasmhunaigh, Jeremy Abetz, Shaun English, David Mitchell, Biswadev Mitra

Research output: Contribution to journalArticleResearchpeer-review


Revision hip arthroplasty is a frequently performed procedure and is projected to increase annually. Removal of a well-fixed acetabular component can involve loss of much needed bone stock. Contemporary instruments allow acetabular removal with minimal morbidity; however, their use requires accurate knowledge of the component size. We describe a technique that allows sizing to be determined accurately, without specialized equipment, in situations where component details are unavailable. Our technique multiplies ratio of head:cup on pre-operative X-ray by the diameter of the index femoral head which is removed intra-operatively to predict index cup size. This novel surgical technique appears accurate in prediction of cup size to guide explant in revision hip arthroplasty.

Original languageEnglish
Pages (from-to)169-171
Number of pages3
JournalArthroplasty Today
Issue number2
Publication statusPublished - Jun 2020


  • Arthroplasty
  • Explant
  • Hip
  • Prediction
  • Revision
  • Size

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