Necdet Sağlam1, Fatih Küçükdurmaz2, Hakan Kivilcim3, Tuhan Kurtulmuş4, Cengiz Sen2, Fuat Akpinar5. 1. Department of Orthopedics and Traumatology, Ümraniye Training and Research Hospital, İstanbul, Turkey. necdetsaglam@hotmail.com. 2. Department of Orthopedics and Traumatology, Bezmialem Vakıf University, Faculty of Medicine, İstanbul, Turkey. 3. Department of Orthopedics and Traumatology, İstanbul Training and Research Hospital, İstanbul, Turkey. 4. Department of Orthopedics and Traumatology, Ümraniye Training and Research Hospital, İstanbul, Turkey. 5. Department of Orthopedics and Traumatology, Abant İzzet Baysal University, Faculty of Medicine, Bolu, Turkey.
Abstract
OBJECTIVE: The aim of this study was to compare the biomechanical properties of minimal invasive sliding antirotator compressive hip screw (MIS-A-CHS), and multiple cannulated screws (CS) on a Pauwels type 3 femoral neck fracture model. METHODS: A Pauwels type 3 vertical femoral neck fractures was created on 12 third-generation proximal femur models which were divided into two equal groups. The fracture was fixed with three CS in the first group, and MIS-A-CHS in the second group. The axial and rotational stiffness and maximum compression effect were compared between the groups. RESULTS: The axial and rotational stiffness and maximum compression were significantly higher in MIS-A-CHS group (912.5 N, 540 N and 10.2 N/m, respectively) than the CS group (627.5 N, 380 N, and 3.9 N/m, respectively). CONCLUSION: MIS-A-CHS appears to be a more secure fixation method in Pauwels type 3 femoral neck fractures than the CS.
OBJECTIVE: The aim of this study was to compare the biomechanical properties of minimal invasive sliding antirotator compressive hip screw (MIS-A-CHS), and multiple cannulated screws (CS) on a Pauwels type 3 femoral neck fracture model. METHODS: A Pauwels type 3 vertical femoral neck fractures was created on 12 third-generation proximal femur models which were divided into two equal groups. The fracture was fixed with three CS in the first group, and MIS-A-CHS in the second group. The axial and rotational stiffness and maximum compression effect were compared between the groups. RESULTS: The axial and rotational stiffness and maximum compression were significantly higher in MIS-A-CHS group (912.5 N, 540 N and 10.2 N/m, respectively) than the CS group (627.5 N, 380 N, and 3.9 N/m, respectively). CONCLUSION:MIS-A-CHS appears to be a more secure fixation method in Pauwels type 3 femoral neck fractures than the CS.