Faculty Collaboration Database

Comparison of two fixation methods of oblique lesser metatarsal osteotomies: a biomechanical study. Foot Ankle Int 1995 Jul;16(7):437-9

Date

07/01/1995

Pubmed ID

7550959

DOI

10.1177/107110079501600711

Scopus ID

2-s2.0-0029121332 (requires institutional sign-in at Scopus site)   13 Citations

Abstract

Two methods of internal fixation of oblique lesser metatarsal osteotomies were compared biomechanically using fresh-frozen human cadaver bones. Osteotomies were made obliquely through the metatarsal shafts and fixed with either crossed Kirschner wires or a single AO screw using the lag technique. The specimens were then fixed at their proximal end and loaded to failure using an axial torsion material testing system (MTS, Minneapolis, MN). Load displacement curves were obtained and the stiffness of the constructs were determined. Single-screw fixation was found to be significantly stiffer than the crossed wire configuration (P < .01). Single-screw fixation resulted in a stiffness of 211.2 +/- 111.7 N/cm (mean +/- SD), while stiffness of the crossed wire configuration averaged 56.9 +/- 25.1 N/cm.

Author List

Slovenkai MP, Linehan D, McGrady L, Lim TH, Harris GF, Shereff MJ

Authors

Gerald F. Harris Emeritus Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
Gerald Harris PhD Director in the Orthopaedic Research Engineering Center (OREC) department at Marquette University

MESH terms used to index this publication - Major topics in bold

Biomechanical Phenomena
Bone Screws
Bone Wires
Elasticity
Equipment Failure
Humans
Materials Testing
Metatarsal Bones
Osteotomy
Rotation
Stress, Mechanical
Weight-Bearing