Related Experiment Video
Updated: Jul 7, 2025
Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
Published on: June 6, 2025
Treatment of intertrochanteric fractures using cephalomedullary nail: One or two cephalic screws?
Jairo Alonso Rincón-Hoyos1, Jairo Fernando Gómez-Ramírez2, Juan Sebastián Cuesta-Montoya3
1Hip and orthopedic trauma surgeon, Clínica Universitaria Colombia, Carrera 21 No. 127D-39, Bogotá, 110121 Colombia.
Objectives:
To determine the incidence of cut-out, cut-in, cut-through, Z-effect, and reverse Z-effect in two cephalomedullary nail (CMN) systems: one with single cephalic screw fixation and the other with dual-screw fixation using a lag screw and an anti-rotation screw.
Methods:
A retrospective study from a cohort of patients was conducted between January 2017 and August 2019 in patients with intertrochanteric fractures treated with osteosynthesis using CMN.
Results:
One hundred ninety-six patients with intertrochanteric fractures who met the inclusion criteria were recruited. The median age was 81 years [interquartile range (IQR) 12]. Seventy-six percent had fractures classified as Orthopaedic Trauma Association/Arbeitsgemeinschaft für Osteosynthesefragen (OTA/AO) 31A2. Twenty-one mechanical complications occurred, 8.7% (17) was cut-out with a single cephalic screw CMN and 2% (4) was Z-effect with a dual-screw CMN non-integrated. The median tip-apex distance (TAD) was 19.4 mm (IQR 10.8) in patients who experienced cut-out and 19 mm (IQR 10) in those who experienced Z-effect. The median time to cut-out occurrence was 39,5 days (IQR 47,5), while the median time to Z-effect was 90 days (IQR 86).
Conclusions:
The incidence of osteosynthesis failure using CMN is more frequent in patients treated with a single cephalic screw CMN.
Level Of Evidence:
Therapeutic, Level III.
