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Technical Briefs

A Cancellous Bone Screw With Adjustable Holding Power

[+] Author and Article Information
Robert Rizza

Department of Mechanical Engineering,
Milwaukee School of Engineering

Scott Van Valin

Department of Orthopaedic Surgery,
Medical College of Wisconsin

Manuscript received March 15, 2013; final manuscript received April 24, 2013; published online June 4, 2013. Editor: Arthur G. Erdman.

J. Med. Devices 7(2), 020906 (Jun 04, 2013) (2 pages) Paper No: MED-13-1039; doi: 10.1115/1.4024307 History: Received March 15, 2013; Revised April 24, 2013

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References

Figures

Grahic Jump Location
Fig. 1

Cancellous bone screw with expansion, threaded and base sections

Grahic Jump Location
Fig. 2

Finite element analysis showing outward expansion of the tabs

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Fig. 3

Pull-out testing of the cancellous bone screw implanted in the distal femur of the Elk

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Fig. 4

Results of the pull-out test in cancellous bone of just the threaded portion of the screw

Grahic Jump Location
Fig. 5

Pull-out of the screw with threaded and expansion sections in cancellous bone

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