The Utility of the Tip–Apex Distance in Predicting Axial Migration and Cutout With the Trochanteric Fixation Nail System Helical Blade

Abstract

Abstract Objectives: To determine whether a tip–apex distance (TAD) <20 mm is associated with a higher rate of axial migration and perforation with the Trochanteric Fixation Nail (TFN) System helical blade implant. Design: Retrospective. Setting: Level I Trauma Center. Participants: Four hundred forty-three patients surgically treated for proximal femur fractures were identified through a query of Current Procedural Terminology code 27245 from January 2009 to February 2013. A total of 258 patients treated with the TFN helical blade system were included in the study. Main Outcome Measured: The association of axial migration and perforation with the measured TAD. Results: The overall rate of m..