The Analysis of Biomechanical Properties of Proximal Femur after Implant Removal

Yang, Jae Hyuk; Jung, Tae-Gon; Honnurappa, Arjun Rupanagudi; Min, Jae Jung; Ham, Chang Hwa; Kim, Tae Yoon; Suh, Seung Woo

doi:10.1155/2016/4987831

Cited by 11 publications

(28 citation statements)

References 32 publications

(46 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To analyse the effect of cementing technique, computational models were created according to average dimensions of the sub-trochanteric femoral area, using digital X-ray from patients of CHUP-ICBAS and proved from a biomechanical data control group [16]- [17]. Figure 1 a) shows a metastatic lytic lesion of the proximal left femur (subtrochanter) identified on a plain pelvic X-ray, where the patient was diagnosed with metastatic disease of a breast cancer.…”

Section: Methodsmentioning

confidence: 99%

The heat transfer modelling for bone metastatic lesion minimization using two different cement types

Oliveira¹

2020

JMEB

View full text Add to dashboard Cite

Bone tumors grow when cells divide without any control, forming a tissue mass. Bone tumors could be benign or malignant, and primary or metastatic due to systemic cancer cells dissemination. They destroy bone and lead to pathological fractures. The main objective of this work is to study the thermal effect induced by the bone cement polymerization, in the bone metastatic tumor minimization. To assess the clinical effect, it is important to test this methodology before its application and obtain sustained results. In this work, a numerical model was developed to predict the temperature distribution produced by cement polymerization. Thus, distinct tests were produced for different two cements types and amounts introduced in a cortical and spongy bone metastatic lesion, with or without an intramedullary titanium nail. The bone cement was introduced to fill in a metastatic lytic lesion area, which the main objective is playing a promising role for bone tumor necrosis due to thermal effects and biomechanical stabilization for function and pain relief.

show abstract

Section: Methodsmentioning

confidence: 99%

The heat transfer modelling for bone metastatic lesion minimization using two different cement types

Oliveira¹

2020

JMEB

View full text Add to dashboard Cite

show abstract

“…The low bone density, the deterioration of the microarchitecture, and the increase in frailty may result in a decrease in the mechanical resistance of this tissue, predisposing it to fractures due to low energy traumas, and the fracture of the proximal end of the femur (PEF) has the highest morbidity and mortality rates. [1][2][3] The surgical treatment of these fractures aims to give the patients conditions to return to their activities. There are several recommended treatments, such as intramedullary tutors, cannulated screws (CSs) and/or the sliding tube plate (STP).…”

Section: Introductionmentioning

confidence: 99%

“…The removal of implants can cause greater local fragility and, with this, possible fractures of the PEF, especially in patients with low bone quality. 3,6,7 Therefore, evaluating the maximum load, energy and displacement necessary for fracture occurrence in synthetic femur models, after the removal of the CSs and the performance of the reinforcement technique with polymethylmethacrylate (PMMA) in different combined positions, through a static bending test simulating a fall on the trochanter, can provide results that determine the development of an alternative technique in the solution of cases in which removing the synthesis is necessary.…”

Section: Introductionmentioning

confidence: 99%

Análise mecânica após reforço femoral proximal com polimetilmetacrilato em orifícios duplos alternados

Freitas

Lessa²,

Oliveira³

et al. 2020

Rev Bras Ortop (Sao Paulo)

View full text Add to dashboard Cite

Resumo Objetivo Avaliar, por meio de ensaio biomecânico, a carga máxima, a energia, e o deslocamento necessários para a ocorrência de fratura em modelos sintéticos de fêmures após a retirada de parafusos acanulados e a realização de técnica de reforço com polimetilmetacrilato (PMMA) em diferentes posições combinadas. Métodos Foram utilizados 25 ossos sintéticos divididos em 4 grupos: o grupo controle (GC), com 10 modelos sem perfuração, e os grupos teste (A, B e C), com 5 modelos cada. Os grupos de teste foram fixados com parafusos acanulados pela técnica de Asnis, e tiveram a síntese removida e o preenchimento de dois dos orifícios formados por técnica de reforço com PMMA. A análise biomecânica foi realizada simulando queda sobre o grande trocânter utilizando máquina servo-hidráulica. Resultados Todos os corpos de prova do GC e dos grupos A, B e C apresentaram fratura baso-cervical do colo femoral, exceto um modelo do grupo B, que apresentou fratura longitudinal. Foi utilizada uma média de 5,4 mL de PMMA no reforço dos grupos com preenchimento. Segundo a análise de variância (analysis of variance, ANOVA) e o teste de comparações múltiplas de Tukey, no nível de 5%, observou-se que o GC apresentou diferença significativa em relação aos grupos A e C nos seguintes parâmetros: carga máxima, energia até a fratura, e deslocamento. Conclusão Observou-se que os grupos A e C, quando comparados ao GC, apresentaram diferenças significativas na observação do deslocamento, da carga máxima, e da energia até a fratura.

show abstract

“…The goal in treating such fractures is to allow the patient to return to normal activities as soon as possible by using fixation of the fracture either through rods, plates and/or screws, or arthroplasty of the hip, to reduce the possibility of complications associated to patient immobility. 2 …”

Section: Introductionmentioning

confidence: 99%

“…Synthesis implant removal is indicated in cases of persistent pain in the gluteal and thigh region caused by the prominence of the synthetic material, implant failure, or infection. 2 , 3 After proximal femur fractures are healed, removing the implants can cause complications such as possible fractures of the femoral neck or intertrochanteric region. 3 …”

Section: Introductionmentioning

confidence: 99%

Static bending test after proximal femoral nail (PFN) removal – in vitro analysis

Paiva¹,

Neto²,

Souto³

et al. 2017

Revista Brasileira de Ortopedia (English Edition)

View full text Add to dashboard Cite

ObjectiveTo evaluate, through biomechanical testing, the resistance to and energy required for the occurrence of proximal femoral fracture in synthetic bone after removal of a proximal femoral nail model (PFN), comparing the results obtained with a reinforcement technique using polymethylmethacrylate (PMMA).MethodsFifteen synthetic bones were used: five units for the control group (CG), five for the test group without reinforcement (TGNR), and five for the test group with reinforcement (TGR). The biomechanical analysis was performed simulating a fall on the trochanter using a servo-hydraulic machine. In the GC, the assay was performed with the PFN intact. In the TGNR and TGR groups, a model of PFN was introduced and the tests were performed in the TGNR, after simple removal of the synthesis material, and in the TGR, after removal of the same PFN model and filling of the cavity in the femoral neck with PMMA.ResultsAll groups presented a basicervical fracture. The CG presented a mean of 1427.39 Newtons (N) of maximum load and 10.14 Joules (J) of energy for the occurrence of the fracture. The TGNR and TGR presented 892.14 N and 1477.80 N of maximum load, and 6.71 J and 11.99 J of energy, respectively. According to the Kruskal–Wallis ANOVA, there was a significant difference in the maximum load (p = 0.009) and energy (p = 0.007) between these groups.ConclusionThe simple removal of a PFN in synthetic bone showed a significant reduction of the maximum load and energy for the occurrence of fracture, which were re-established with a reinforcement technique using PMMA.

show abstract

The Analysis of Biomechanical Properties of Proximal Femur after Implant Removal

Cited by 11 publications

References 32 publications

The heat transfer modelling for bone metastatic lesion minimization using two different cement types

The heat transfer modelling for bone metastatic lesion minimization using two different cement types

Análise mecânica após reforço femoral proximal com polimetilmetacrilato em orifícios duplos alternados

Static bending test after proximal femoral nail (PFN) removal – in vitro analysis

Contact Info

Product

Resources

About