scholarly journals Treatment of Femoral Neck Fractures with Cannulated Screw Invasive Internal Fixation Assisted by Orthopaedic Surgery Robot Positioning System

2019 ◽  
Vol 11 (5) ◽  
pp. 864-872 ◽  
Author(s):  
Xiao‐dong Wang ◽  
Hai Lan ◽  
Kai‐Nan Li
Keyword(s):  
Femoral Neck ◽  
Internal Fixation ◽  
Orthopaedic Surgery ◽  
Femoral Neck Fractures ◽  
Cannulated Screw ◽  
Positioning System ◽  
Robot Positioning

scholarly journals Biomechanical analysis of the closed reduction internal fixation with cannulated screw of femoral neck fractures

Medicine ◽  
2021 ◽  
Vol 100 (8) ◽  
pp. e24834
Author(s):  
Jian-Guang Wang ◽  
Jun-Xian Wu ◽  
Yu-Min Li ◽  
You-Yin Xu
Keyword(s):  
Femoral Neck ◽  
Internal Fixation ◽  
Closed Reduction ◽  
Femoral Neck Fractures ◽  
Cannulated Screw ◽  
Biomechanical Analysis

scholarly journals Finite element analysis of a new internal fixation implant for Pauwels type III femoral neck fractures

2020 ◽  
Author(s):  
Zhirong Fan ◽  
Haitao Su ◽  
Zhou Lin ◽  
Huida Huang ◽  
Junde Zhou ◽  
...  
Keyword(s):  
Femoral Head ◽  
Femoral Neck ◽  
Internal Fixation ◽  
Femoral Neck Fractures ◽  
Cannulated Screw ◽  
Von Mises Stress ◽  
Axial Loads ◽  
Fracture Group ◽  
Type Iii ◽  
Von Mises

Abstract Background The optimal treatment strategy for Pauwels type III femoral neck fractures remains controversial. A new internal fixation femoral neck system (FNS) for the treatment of femoral neck fractures was developed, and we compared the mechanical efficiency of the internal fixation FNS with that of two cannulated screw configurations for the treatment of Pauwels type III femoral neck fractures. Method: In this study, we constructed models of Pauwels type III femoral neck fractures with angles of 50°, 60°, and 70°. Moreover, a fixation model with the FNS and two fixation models with cannulated screws were developed. Under two axial loads, 1400 N and 2100 N, the von Mises stress distributions, maximum von Mises stress, and displacements of the femur and internal fixation components were measured for each fracture group. Result The maximum von Mises stress of internal fixation in the three models was mostly located near the fracture line, and the femoral head region closest to the femoral calcar experienced the maximum amount of stress. As the Pauwels angle and axial loads increased, the stress and displacement of the proximal femoral head and internal fixation component increased in each group. Compared with cannulated screw configurations, the internal fixation FNS showed lower values of peak stress at the femoral head and smaller displacements of the femur and internal implant in the treatment of Pauwels type III femoral neck fractures with Pauwels angles of 50°, 60°, and 70°. Conclusion The newly developed internal fixation FNS provided improved biomechanical stability for the treatment of Pauwels type III femoral neck fractures, which indicated that the internal fixation FNS may be a new option for the treatment of vertical femoral neck fractures.

216 Fix or Replace: Is Internal Fixation Still A Viable Option in The Elderly with Un-Displaced Intracapsular Femoral Neck Fractures?

2021 ◽  
Vol 108 (Supplement_6) ◽  
Author(s):  
R Morris ◽  
A Krishna ◽  
H Hamid ◽  
M Chawda ◽  
H Mumtaz
Keyword(s):  
Femoral Neck ◽  
Internal Fixation ◽  
Revision Surgery ◽  
Retrospective Review ◽  
The Elderly ◽  
Femoral Neck Fractures ◽  
Type I ◽  
Cannulated Screws ◽  
Viable Option ◽  
Displaced Femoral Neck Fractures

Abstract Aim The treatment of impacted or un-displaced femoral neck fractures in the elderly osteoporotic patient is still largely debated, with arthroplasty versus internal fixation two surgical options1. Our aim was to retrospectively review patients over the age of 80 with un-displaced intracapsular hip fractures who had undergone internal fixation and assess their rate of mortality and revision surgery. Method We conducted a retrospective review of all patients with femoral neck fractures over a 4-year period between January 2015 to December 2018. We refined this to only patients over the age of 80 with un-displaced intracapsular femoral neck fractures fixed with cannulated screws. We noted their mental and mobility status, their follow-up attendance over 3 years, their mortality and rate of revision surgery. Results There were a total of 1232 femoral neck fractures in a 4-year period. Of these, 37 were >80 with un-displaced intracapsular femoral neck fractures, with 23 fixed with cannulated screws and 14 with a Dynamic Hip Screw. Mean age – 85, M:F (1:4.75). All patients were either Garden Classification Type I or II. 4% had cognitive impairment. All patients were independently mobile. 83% were followed up for 3 years, with 1 patient (4%) undergoing revision surgery 3 years following cannulated screw fixation. The 30-day mortality rate was 5%. Conclusions The treatment choice for un-displaced intracapsular femoral neck fractures in the elderly remains debateable. Our retrospective review shows that the rate of re-operation is low in patients who have undergone fixation with cannulated screws and so this remains a viable option.

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