John Wixted, M.D., UMass Medical School
It is important for an arthrodesis nail to maintain compression for successful bony fusion. To test new designs of arthrodesis nails a device and protocol were developed to accurately measure compression within a joint over time. The protocol utilized a uniaxial testing machine to cyclically load the samples 10,000 times at 1 Hz from 0-200 lbs. Using Sawbones as a testing model, a 10% decrease in compression was experienced with a standard locked nail. Using this method, new and old designs of arthrodesis nails can be compared to determine which best maintains compression.
Worcester Polytechnic Institute
Major Qualifying Project
All authors have granted to WPI a nonexclusive royalty-free license to distribute copies of the work, subject to other agreements. Copyright is held by the author or authors, with all rights reserved, unless otherwise noted.