Biomechanical Analysis of a Novel Intercalary Prosthesis for Humeral Diaphyseal Segmental Defect Reconstruction

Zhao, Liqun; Tian, Dong‐mu; Yue, Wei; Zhang, Junhui; Di, Zheng-Lin; He, Zhiping; Hu, Yongcheng

doi:10.1111/os.12368

Cited by 29 publications

(43 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Poisson ratio is the same for almost all metals as for bone, and the literature shows that the preferred value for the Poisson ratio is ν = 0.3 [3,5,20,23,24,26,28,31,33,42,54,56,58]. Notwithstanding the agreement between studies, a few have proposed a "slightly" different Poisson's ratio around ν = 0.3 for bone tissues.…”

Section: From Reality To 3d Model: Mechanical Properties Assignmentmentioning

confidence: 88%

“…However, it is sometimes difficult to identify the diffuse boundaries of the cancellous bone, and it takes experience and time to achieve an acceptable model. This last type of humerus model can be found in the studies by Dahan et al [3], Fletcher et al [29,30], Mischler et al [31], Zhang et al [5], and Zhao et al [20]. The second model (B) has an empty shaft due to the medullary cavity, and a solid humeral head that ignores the thin cortical cover.…”

Section: Simplification Of the Geometry Characteristics Of The Bonementioning

confidence: 99%

“…The studies carried out by Fletcher et al [29,30] and Mischler [31], which used a framework specifically designed to optimize the FEA process for proximal humerus fracture analyses treated with locking plates and included the computational framework designed by Varga et al [42], also performed multiple validations of the proximal humerus model offered in the framework, taking as reference the strain around the the locking plate screws and obtaining very high correlation values in two different test scenarios: R 2 = 0.904 and R 2 = 0.99. Last but not least, the model used for the study carried out by Zhao et al [20], that was validated through an in vitro test using bone dissplacement as the validation metric, obtained 3.46% and 5.69% for the tension and torsion tests, respectively. A small displacement was found compared to the in vitro test, however it showed the precision of the FEA bone model used.…”

Section: Simplification Of the Geometry Characteristics Of The Bonementioning

confidence: 99%

“…Nevertheless, discrepancies exist between studies due to the lack of standards for the characterization of the bone model, including in proximal humerus studies. Each researcher uses different bone material properties and natures; for instance, there are studies were the orthotropic nature is preferred for the bone [20,21], while others use the isotropic nature [3,5,[22][23][24][25][26][27][28], even when anisotropy is the actual nature of bone tissues. The research papers also differ in their modeling technique.…”

Section: Introductionmentioning

confidence: 99%

“…The research papers also differ in their modeling technique. Some researchers consider the bone as a solid and "homogeneous" model, without distinguishing between the different bone tissue [25,26], while other studies use a threshold to separate cancellous and cortical bone in order to maintain real bone structure in their model [3,5,20,[29][30][31]. What is more, each researcher uses dissimilar meshing parameters for their FEA bone models-crucial parameters for the accuracy of outcomes, which vary from the type of element to the element's edge length.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Castro-Franco¹,

Mendoza-Muñoz²,

González-Ángeles³

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

Proximal humerus fractures are becoming more common due to the aging of the population, and more related scientific research is also emerging. Biomechanical studies attempt to optimize treatments, taking into consideration the factors involved, to obtain the best possible treatment scenario. To achieve this, the use of finite element analysis (FEA) is necessary, to experiment with situations that are difficult to replicate, and which are sometimes unethical. Furthermore, low costs and time requirements make FEA the perfect choice for biomechanical studies. Part of the complete process of an FEA involves three-dimensional (3D) bone modeling, mechanical properties assignment, and meshing the bone model to be analyzed. Due to the lack of standardization for bone modeling, properties assignment, and the meshing processes, this article aims to review the most widely used techniques to model the proximal humerus bone, according to its anatomy, for FEA. This study also seeks to understand the knowledge and bias behind mechanical properties assignment for bone, and the similarities/differences in mesh properties used in previous FEA studies of the proximal humerus. The best ways to achieve these processes, according to the evidence, will be analyzed and discussed, seeking to obtain the most accurate results for FEA simulations.

show abstract

Section: From Reality To 3d Model: Mechanical Properties Assignmentmentioning

confidence: 88%

Section: Simplification Of the Geometry Characteristics Of The Bonementioning

confidence: 99%

Section: Simplification Of the Geometry Characteristics Of The Bonementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Castro-Franco¹,

Mendoza-Muñoz²,

González-Ángeles³

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

show abstract

Effect of implant length variations on stress shielding in proximal humeral replacement after tumor excision under torsion: Finite element study

Pareatumbee

Zainul‐Abidin

Yew

et al. 2022

Journal Orthopaedic Research

View full text Add to dashboard Cite

The proximal humerus is the most common site of occurrence of primary bone tumors in the upper limb. Endoprosthetic replacement is deemed as the preferred reconstructive option following primary resection of bone tumors. However, it has been also associated with complications such as stress shielding and aseptic loosening compromising prosthetic survival. Our objective was to conduct a finite element (FE) study to investigate the effect of varying endoprosthesis length on bone stresses as well as to quantify the extent of stress shielding across the bone length (BL) in a humerus‐prosthesis assembly for proximal humeral replacement after tumor excision thereby allowing us to identify the optimal implant length with best biomechanical performance. FE models of the intact humerus and humerus‐prosthesis assemblies were established where they were loaded at the elbow joint under torsion with the glenohumeral joint fixed to represent twisting. After dividing the bone into individual slices consisting of 5% BL, the maximum cortical and cancellous principal, von Mises and shear bone stresses were calculated. To measure the level of stress shielding, the percentage stress change from the intact state was evaluated across each slice. Similar stress patterns were observed between the intact state and shorter endoprosthesis compared to the longer endoprostheses. Our findings illustrated the possibility of stress shielding occurring under torsional forces with its effect increasing with implant lengthening. To conclude, we believe that using a shorter prosthesis may substantially diminish the risk of potential implant failure due to stress shielding.

show abstract

Dynamic effect of three locking plates fixated to humeral fracture based on multibody musculoskeletal model

Peng

Chen

et al. 2021

Robotics Computer Surgery

View full text Add to dashboard Cite

Objective: This study attempts to analyse the biomechanical effect of internal fixation (plated in parallel or plated vertically) on the basis of distal humeral fractures on musculoskeletal multibody dynamics using AnyBody in Finite Element Method.Method: Humeral 3D models were reconstructed by MIMICS after volunteers' CT image input in *.dicom format, and processed by Geomagic Studio for surfaces, while locking plates and screws were then designed by Pro-E. A humeral model of T-type fracture was created and assembled in Hypermesh, to integrate fixtures (e.g., MPL/ PML/ML), to grid the mesh and then assign materials. A musculoskeletal model of the upper limb was established by AnyBody to simulate elbow flexion and extension.They were finally imported to Abaqus for boundary conditions and dynamic analysis. Result:In terms of Von Mises stress, its maximum increased and then decreased gradually during the joint motion, but p > 0.05 in SPSS suggests no significant difference for all three fixtures. In terms of displacement, when the elbow was at 90°, each motional pattern reached its peak as follows: ML180°= 0.28 mm, MPL90°= 0.49 mm & PML90°= 0.54 mm during flexion; ML180°= 0.073 mm, MPL90°= 0.10 mm & PML90°= 0.12 mm during extension. p < 0.05 suggests a significant difference for the displacements of all three fixations. p = 0.007 < 0.01667 suggests the significant difference between the two fixations, for example, PML90°and ML180°, indicating that the peak displacement of ML180°i s less than that of PML90°. Conclusion:After generally analysed in musculoskeletal dynamics, the biomechanical property of the fixtures was presented as follows: the displacement of the parallel plate was less than that of the vertical, and the parallel plate may optimise the clinical reduction anatomically.

show abstract

Biomechanical Analysis of a Novel Intercalary Prosthesis for Humeral Diaphyseal Segmental Defect Reconstruction

Cited by 29 publications

References 20 publications

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Effect of implant length variations on stress shielding in proximal humeral replacement after tumor excision under torsion: Finite element study

Dynamic effect of three locking plates fixated to humeral fracture based on multibody musculoskeletal model

Contact Info

Product

Resources

About