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Prophylactic bioactive screw fixation as an alternative augmentation for femoroplasty

  • Takehito Hananouchi EMAIL logo
Published/Copyright: January 10, 2015

Abstract

Femoroplasty is theoretically a prophylactic surgical procedure for femoral neck fracture. Although bone cement is generally used for augmentation, its distribution cannot be easily controlled. This study investigated whether a bioactive screw is feasible for femoroplasty as an alternative augmentation material. A mechanical test was done to compare the strength of four types of augmentation bioactive screw (Superfixsorb), two bioinert cements, or no intervention in a composite femoral bone. The peak load to fracture under simulated falling was compared among the four groups. The mean peak load to failure in the bioactive screw group (2667 N) was significantly higher than that in the intact group (2391 N) (p=0.028), comparable to that in the Simplex P cement group (2864 N) (p=0.11), and significantly lower than that of the cranioplastic cement group (3022 N) (p=0.006). The strength of a composite femur with the bioactive screw was higher than that of an intact bone and comparable to one cement augmentation. Thus, this bioactive screw can be potentially used as augmentation material for femoroplasty.


Corresponding author: Takehito Hananouchi, MD, PhD, Medical Engineering Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Osaka Sangyo University, 3-1-1 Nakagaito, Daito 574-8530, Japan, Phone: +81-72-875-3001, Fax: +81-72-875-3503, E-mail:

Acknowledgments

This study was partially supported by a grant from the Japan Osteoporosis Foundation (brought by Lilly Japan).

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Received: 2014-4-29
Accepted: 2014-12-3
Published Online: 2015-1-10
Published in Print: 2015-4-1

©2015 by De Gruyter

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