Comparison of cortical and cancellous screw pull-out strengths about the posterior column and sacroiliac joint

Wayne J. Daum, Rita M. Patterson, Thomas J. Cartwright, Steven F. Viegas

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

This study addresses the comparative pull-out strengths of cortical (4.5 mm) and fully threaded cancellous (6.5 mm) bone screws from sites about the pelvis commonly used in the fixation of posterior column acetabular fractures and sacroiliac (SI) disruptions. These sites include one from lateral to medial through the posterior column, two from posterolateral to anteromedial across the SI joint, one vertically through the sacral ala, and one vertically through the iliopubic column (see Fig. 1A and B). Statistical analysis showed no significant difference in the force required for pull-out failure of the cortical versus the cancellous screws at any of the sites tested.

Original languageEnglish
Pages (from-to)34-37
Number of pages4
JournalJournal of Orthopaedic Trauma
Volume5
Issue number1
DOIs
StatePublished - Mar 1991

Keywords

  • Acetabulum
  • Bone screws
  • Internal fixation
  • Pelvis
  • Sacroiliac joint

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