Effects of the Amount of Proximal Tibia Resection on the Bone Strength of Prepared Bone Surface: A FEM Study / 대한정형외과학회잡지
The Journal of the Korean Orthopaedic Association
;
: 507-513, 2009.
Article
in Korean
| WPRIM
| ID: wpr-656460
ABSTRACT
PURPOSE:
We wanted to evaluate the mechanical strength of proximal tibia as resection distance increased from the joint surface. MATERIALS ANDMETHODS:
We obtained the CT images of twenty knee osteoarthritis patients undergoing total knee arthroplasty. The finite element models were created based on the computed tomography images. The 8-node hexahedron element was made from BIONIX(TM) (CANTIBio. Co, Suwon, Korea), which is automatic mesh generation software program. The finite element model of the proximal tibia was resected at 6 mm, 8 mm, 10 mm, 12 mm, 15 mm and 18 mm from the lateral joint surface. A 1% strain rate was applied to a model by using HyperMesh(TM) software (Altair Engineering. Inc, Seattle, USA). The ultimate stress was calculated from the finite element analysis with using ANSYS 9.0 (ANSYS. Inc, Orlando, USA).RESULTS:
The mean ultimate stress was 906.84 MPa, 877.22 MPa, 895.93 Mpa, 852.70 MPa, 742.90 Mpa and 585.51 Mpa at the 6 mm, 8 mm, 10 mm, 12 mm, 15 mm and 18 mm resection levels. As compare to the 6 mm resection level, the bone strengths at 15 mm and 18 mm were decreased with statistical significance (15 mm p=0.005, 18 mm p=0.000).CONCLUSION:
The ultimate stress was decreased as the resection distance increased from the joint surface. But within a 12 mm resection distance from the lateral condyle articular surface of the tibia, the ultimate stress was not significantly decreased (p>0.05).
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Osteoarthritis
/
Arthroplasty
/
Sprains and Strains
/
Tibia
/
Osteoarthritis, Knee
/
Finite Element Analysis
/
Joints
/
Knee
Limits:
Humans
Language:
Korean
Journal:
The Journal of the Korean Orthopaedic Association
Year:
2009
Type:
Article
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