Biomechanical advantage of lengthening of the femur with an external fixator over an intramedullary nail

Woo Kie Min, Byung Guk Min, Chang Wug Oh, Hae Ryong Song, Jong Keon Oh, Hyung Soo Ahn, Byung Chul Park, Poong Taek Kim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The present experimental study investigated biomechanical differences in methods of femoral lengthening using a monolateral external fixator only and using an external fixator over an intramedullary nail. Three materials, namely polyvinyl chloride rods, composite synthetic bone, and cadaver-bone, were tested using the MTS machine. We evaluated the differences of axial stiffness according to the presence of a nail or the numbers of half-pins (two or three half-pins) that were fixed at each side of osteotomy. The addition of a nail may increase the axial stiffness of the frame of monolateral external fixator for limb lengthening. Additionally, it is enough to distract the femur with fixing two half-pins at each side, when using the technique of lengthening over a nail.

Original languageEnglish
Pages (from-to)39-43
Number of pages5
JournalJournal of Pediatric Orthopaedics Part B
Volume16
Issue number1
DOIs
Publication statusPublished - 2007 Jan

Keywords

  • Biomechanics
  • External fixator
  • Intramedullary nail
  • Lengthening

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Orthopedics and Sports Medicine

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