Arthrodesis of the First Metatarsophalangeal Joint: A Biomechanical Study of Internal Fixation Techniques

Mark J. Curtis, Quentin G.n. Cox, Mark Myerson, Riyaz H. Jinnah, Ian Alexander

Research output: Contribution to journalArticle

Abstract

This study compares the strength and rigidity of four methods of internal fixation for arthrodesis of the first metatarsophalangeal joint. Ten matched pairs of cadaveric first rays were harvested and arthrodesis performed by one of four techniques: (1) planar excision of joint surfaces and fixation with crossed Kirschner wires, (2) planar excision of joint surfaces and internal fixation with a dorsal plate and screws, (3) planar excision of joint surfaces and internal fixation with an interfragmentary screw, or (4) excision of the joint surfaces using powered conical reamers and fixation with an interfragmentary lag screw. Biomechanical testing with a Bionix 858 materials testing machine was carried out, applying a plantar force utilizing principles of cantilever loading. Force applied and displacement of the arthrodesis were recorded. Of the four methods tested, bony preparation with power conical reamers and supplementary interfragmentary screw fixation was the most stable.

Original languageEnglish (US)
Pages (from-to)395-399
Number of pages5
JournalFoot & Ankle International
Volume14
Issue number7
DOIs
StatePublished - Sep 1993

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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