Primary protrusion of the acetabulum. Report of affected identical twins

B. S. Bilfield, C. J. Janecki, C. M. Evarts

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A case of primary acetabular protrusion in identical twins previously not reported, and a review of the literature with special reference to roentgenographic criteria and genetic factors calls attention to bilateral crossed teardrop sign, intertuberous distance less than normal, Shenton's line intact bilaterally, and greater than normal CE angle bilaterally. The genetic transmission of protrusio acetabuli is a well documented phenomenon.

Original languageEnglish (US)
Pages (from-to)257-262
Number of pages6
JournalClinical Orthopaedics and Related Research
StatePublished - 1973

All Science Journal Classification (ASJC) codes

  • General Medicine


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