Biomechanical Evaluation of Two Different Screw Positions for Fusion of the Calcaneocuboid Joint

In triple arthrodesis performed for severe deformity and neuroarthropathy in poorly compliant patients with os-teoporotic bone, fixation of the arthrodesis is critical. We biomechanically tested an alternative means of stabilization for calcaneocuboid fusions. In seven matched pairs of fresh-frozen...

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Bibliographic Details
Published in:	Foot & ankle international Vol. 20; no. 1; pp. 33 - 36
Main Authors:	Kann, N. Jeffrey, Parks, Brent G., Schon, Lew C.
Format:	Journal Article
Language:	English
Published:	Los Angeles, CA SAGE Publications 01-01-1999
Subjects:	Arthrodesis - instrumentation Arthrodesis - methods Biomechanical Phenomena Bone Screws - standards Cadaver Evaluation Studies as Topic Humans Methods Movement Random Allocation Tarsal Joints - physiopathology Tarsal Joints - surgery
Online Access:	Get full text
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Summary:	In triple arthrodesis performed for severe deformity and neuroarthropathy in poorly compliant patients with os-teoporotic bone, fixation of the arthrodesis is critical. We biomechanically tested an alternative means of stabilization for calcaneocuboid fusions. In seven matched pairs of fresh-frozen cadaver feet, we removed the soft tissue from around the calcaneocuboid joint, except for the capsule, and we did not resect the articular cartilage. One joint of each pair was fixed with an oblique standard screw, and the contralateral joint was stabilized with an axial screw placed perpendicularly to the joint surface. Testing on an MTS Mini Bionix Test Frame (MTS Systems Corp., Eden Prairie, MN) demonstrated that the axial screw provided significantly higher initial stiffness and maximum load to failure. We concluded that an axial screw provided better fixation of the calcaneocuboid joint.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1071-1007 1944-7876
DOI:	10.1177/107110079902000107