Abstract:

Objectives: This study aims to investigate the positioning of the helical blade to prevent mechanical complications in surgically fixed intertrochanteric fractures (ITFs). Patients and methods: In this retrospective study, 392 patients (158 males, 234 females; mean age: 75.5±13.4; range, 20 to 101) years) with ITFs treated in lateral decubitus position with proximal femoral nail anti-rotation in a single center between January 2009 and January 2017 were evaluated. The fractures were classified according to the Orthopedic Trauma Association classification preoperatively and grouped as stable or unstable. Postoperatively, tip-apex distance (TAD), Baumgaertner reduction criteria, and obtained quadrants were evaluated. Patients with an unstable fracture, proper TAD, and acceptable or good reduction were included in the final evaluation for statistical analysis to investigate the safest quadrant to prevent cut-out complication. Results: Cut-out complications were observed in 19 (4.8%) patients. The scenario; unstable fracture, TAD <25 mm, acceptable or good reduction consisted of 111 patients in total and cut-out complication occurred in four of them (3.6%) (one in center-posterior, one in center-center, one in superior-anterior, and one in superior-center quadrants). There was no statistically significant difference between center-center, inferior-center, and inferior-posterior quadrants (p=0.49). Conclusion: Inferior-posterior placement is as safe as central-central or inferior-central placement for blade fixation in the surgical treatment of ITF.

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