Abstract
Purpose:
The aim of this study was to compare the mechanical stability of two methods of fixation for arthrodesis of the hallux metatarsophalangeal joint:
a technique using an intramedullary screw and a standard technique using crossed interfragmentary compression screws.
Methodology:
The metatarsophalangeal joint was mechanically evaluated in cantilever bending using a servohydraulic testing machine. Differences in stiffness and strength parameters between the two techniques were checked for significance (P<0.05) using a paired t-test.
Results:
Fixation provided by the intramedullary screw was stiffer and stronger than that from crossed compression screws.
Conclusions:
The stronger and stiffer intramedullary screw technique offers mechanical advantages over the crossed interfragmentary screw technique.
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