Objective: The objective of this study was to test a newly developed implant for the treatment of intertrochanteric\r\nfractures, the X-Bolt, against the current gold standard, the Dynamic Hip Screw (DHS), by comparing the amount of\r\nenergy required to cause failure of both of them.\r\nMethods: Push out studies were performed with both the dynamic hip screw and the X-Bolt in an artificial bone\r\nsubstrate in the form of polyurethane foam blocks, which have predefined mechanical properties. These push out\r\nstudies were performed as a means to investigate each implants resistance to ââ?¬Ë?cut outââ?¬â?¢ as this is the most common\r\nmode of failure with the DHS.\r\nResults: The results demonstrate that the X-Bolt produced a force displacement curve with a different pattern of\r\nfailure than the DHS. The X-Bolt initially required less energy to move it within the test material, than the DHS. However,\r\nthe further the X-Bolt advanced within the test material, the greater the resistance and as this was the opposite as to\r\nwhat occurred with the DHS, the X-Bolt eventually required more energy than the DHS to advance through the test\r\nmaterial and fail due ââ?¬Ë?cut outââ?¬â?¢.\r\nConclusion: The X-Bolt is a new concept with regard to fixation of intertrochanteric fractures. It produces a different\r\nforce displacement curve than the dynamic hip screw. However further investigations are necessary before the true\r\npotential of this new implant is known.
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