Biomechanical comparison of methods of fixation of isolated osteotomies of the posterior acetabular column

A. Schopfer, Denis Diangelo, T. Hearn, J. Powell, M. Tile

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Ten fresh frozen specimens of a hemipelvis, including the hip joint, capsule and proximal femur, from elderly cadavers were used to evaluate three methods of internal fixation of isolated posterior column osteotomies. Intact and reconstructed specimens were tested at 30° and 60° of hip flexion in a specially designed joint simulator: The three methods of fixation used were a single 3.5 mm reconstruction plate, two such plates, and a 4.5mm lag screw with a single plate. Motion at the fracture site in three orthogonal directions, and the overall stiffness of the construct, were recorded simultaneously. No significant differences were noted in stiffness for the three procedures and all retained 80% of the intact stiffness. At 60° of flexion, smaller interfragmentary compliances were allowed by fixation with a lag screw and a neutralisation plate (p<0.05). At 30°, the position of the load plane relative to the fracture plane allowed less interfragmentary motion, so that no significant differences were found between the 3 methods.

Original languageEnglish (US)
Pages (from-to)96-101
Number of pages6
JournalInternational Orthopaedics
Volume18
Issue number2
DOIs
StatePublished - Apr 1 1994
Externally publishedYes

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Osteotomy
Joint Capsule
Hip Joint
Cadaver
Femur
Compliance
Hip
Joints

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine

Cite this

Biomechanical comparison of methods of fixation of isolated osteotomies of the posterior acetabular column. / Schopfer, A.; Diangelo, Denis; Hearn, T.; Powell, J.; Tile, M.

In: International Orthopaedics, Vol. 18, No. 2, 01.04.1994, p. 96-101.

Research output: Contribution to journalArticle

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