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

First Page Preview

View Large
First page PDF preview
Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.


Kenneth, G., Tyber, J., and Pacaccio, D., 2011, “Osteosynthetic Implants and Methods of Use and Manufacture,” U.S. Patent No. 7,985,222 B2.
Bucholz, R., Heckman, J., and Court-Brown, C., Fractures in Adults, 6th ed., Lippincott, William and Wilkins, Philadelphia, PA.
Ricci, W. M., Tornetta, P., Petteys, T., Gerlach, D., Cartner, J., Walker, Z., and Russell, T. A., 2010, “A Comparison of Screw Insertion Torque and Pullout Strength,” J. Ortho. Trauma, 26(6), pp. 374–378. [CrossRef]


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

Grahic Jump Location
Fig. 3

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

Grahic Jump Location
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




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In