Intralesional curettage versus prosthetic replacement for bone tumors - a finite element analysis case of limb salvage simulation in biomechanics.
Comput Methods Programs Biomed
; 198: 105775, 2021 Jan.
Article
em En
| MEDLINE
| ID: mdl-33130494
ABSTRACT
BACKGROUND AND OBJECTIVES:
To compare mechanical properties of femoral tumor treatments so that better operative strategy for limb tumors surgery is optimized.METHODS:
Fourteen femoral CT images were randomly selected to rebuild 3D models by MIMICS. They were then executed by reverse engineering softwares for simulative modes. Mode #1 Intralesional curettage with cement filled plus fixator; Mode #2 Distal femur resection with tumorous prosthesis replaced. Finally, the mechanical aspects such as stress and displacement were compared by finite element analysis.RESULTS:
Analyzed by AnSys, the observation indexes were measured as follows for displacement of femurs, d=1.4762 (< a=3.9042 < c=3.9845 < b=4.1159) in mm is the most staple of all models; for displacement of implants (fixators or prostheses), it's similar to the behavior of femurs and with no significant difference; for stresses of femurs, no significant difference was found among all models; the stresses of implants (fixations and prostheses) were observed as d=39.6334 (< a=58.6206 < c=61.8150 < b=62.6626) in MPa correspondently, which is the least; for stresses of the general system, the average of peak values for integrated devices of all models are d=40.8072 (< a=58.6206 < c=61.7831< b=62.6626) in MPa, which is also the least. As a final result, both maximum values for displacement and stress of mode 2 are lower than those of mode 1.CONCLUSIONS:
Our finite element analysis of limb salvage simulation in biomechanics proved that, to treat distal femoral bone tumors, prosthetic replacement is more efficient than intralesional curettage.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Neoplasias Ósseas
/
Salvamento de Membro
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article