Author/Authors :
Ozturan, Burak Istanbul Medeniyet University - Goztepe Training and Research Hospital - Department of Orthopedics and Traumatology, Istanbul, Turkey , Erinc, Samet Sisli Hamidiye Etfal Training and Research Hospital - Clinic of Orthopedics, Istanbul, Turkey , Taylan Oz, Tayyar Umraniye Training and Research Hospital - Clinic of Orthopedics, Istanbul, Turkey , Ozkan, Korhan Istanbul Medeniyet University - Goztepe Training and Research Hospital - Department of Orthopedics and Traumatology, Istanbul, Turkey
Abstract :
Objective: To compare antirotator proximal femoral nail (A-PFN)
with antirotator dynamic hip screw (A-DHS). Methods: Fourteen
proximal femur models with type 31/A2 fracture, according to
the AO Foundation/Orthopaedic Trauma Association (AO/OTA)
classification, were separated into two groups. Group 1 bones
(n = 7) were fixed with A-PFN and Group 2 (n = 7) with A-DHS.
A 5 mm/min axial load was applied to femur heads using a testing
device. Results: Two of the seven models in the A-PFN group
fractured at the proximal, and the other five at distal locking screw
level. All models in the A-DHS group fractured at the tightened
distal screw region. The median fracture load for the A-PFN group
was 132.1 N (97.1-173.69 N range), and for the A-DHS group it was
81.7 N (75.15-89.12 N range). Conclusion: A-PFN-treated unstable
intertrochanteric fractured models resisted to higher levels of axial
load than the A-DHS-treated group, with statistically significant
difference. However, clinical studies are required to support these
results. Level of Evidence V, Biomechanical study
