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Biomechanical analysis of the treatment of intertrochanteric hip fracture with different lengths of dynamic hip screw side plates
- Source :
- Technology and Health Care. 28:593-602
- Publication Year :
- 2020
- Publisher :
- IOS Press, 2020.
-
Abstract
- BACKGROUND: Dynamic hip screw (DHS) is a common implant used to treat stable-type intertrochanteric hip fractures. There are many factors that can affect the success rate of the surgery, including the length of side plates. It is therefore important to investigate the biomechanical effect of different DHS side plates on bones. OBJECTIVE: In order to reduce the likelihood of an implant failure, the aim of this study was to use finite element analysis (FEA) to investigate and understand the effect of side plates with different lengths in DHS. METHODS: In this FEA study, a 3D model with cortical bone, cancellous bone, side plate, lag screw, and cortical screws to simulate the implantation of DHS with different lengths of side plate (2-hole, 4-hole, and 6-hole) for intertrochanteric hip fractures was constructed. The loading condition was used to simulate the force (400 N) on the femoral head and the stress distribution on the lag screw, side plate, cortical screws, and femur was measured. RESULTS: The highest stress points occured around the region of contact between the screw and the cortical bones. The stress on the femur at the most distal cortical screw was the greatest. The shorter the length of the side plate, the greater the stress on the cortical screws, resulting in an increased stress on the femur surrounding the cortical screws. CONCLUSIONS: The use of DHS with 2-hole side plate may increase the risk of side plate pull-out. The results of this study provide a biomechanical analysis for selection of DHS implant lengths that can be useful for orthopaedic surgeons.
- Subjects :
- musculoskeletal diseases
Bone Screws
Finite Element Analysis
Biomedical Engineering
Biophysics
Health Informatics
Bioengineering
Biomaterials
Fracture Fixation, Internal
03 medical and health sciences
Femoral head
0302 clinical medicine
Humans
Medicine
Femur
Orthodontics
030222 orthopedics
Dynamic hip screw
Hip fracture
Hip Fractures
business.industry
Biomechanics
Implant failure
030229 sport sciences
musculoskeletal system
medicine.disease
Biomechanical Phenomena
medicine.anatomical_structure
Cortical bone
business
Bone Plates
Cancellous bone
Information Systems
Subjects
Details
- ISSN :
- 18787401 and 09287329
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Technology and Health Care
- Accession number :
- edsair.doi.dedup.....4403aadc5d65f03ee3954c860bee9197