Experimental assessment of biomechanical properties in human male elbow bone subjected to bending and compression loads

Singh, Dilpreet; Rana, Abhishek; Jhajhria, Saroj Kaler; Garg, Bhavuk; Pandey, Pulak M.; Kalyanasundaram, Dinesh

doi:10.1177/2280800018793816

Cited by 21 publications

(32 citation statements)

References 56 publications

(93 reference statements)

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“…Clearly, compared with PEKK and PT20, PT40 containing high Ta content exhibited optimized surface performances. Furthermore, PT40 with high Ta content had improved mechanical performances (e.g., compressive strength and modulus of elasticity), which is close to the cortical bone of human [ 26 , 27 ]. In short, PT40 with excellent biocompatibility, improved mechanical performances and bioactivity stimulated cell responses, and promoted osseointegration, which might have tremendous potential for bear-loading bone substitute.…”

Section: Discussionmentioning

confidence: 97%

Implantable PEKK/tantalum microparticles composite with improved surface performances for regulating cell behaviors, promoting bone formation and osseointegration

Mei

Qian

et al. 2021

Bioactive Materials

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Polyetherketoneketone (PEKK) exhibits admirable biocompatibility and mechanical performances but bioinert while tantalum (Ta) possesses excellent osteogenesis and osseointegration but high elastic modulus and density, and processing is too difficult and expensive. In the present study, combining of the advantages of both PEKK and Ta, implantable composites of PEKK/Ta were fabricated by blending PEKK with Ta microparticles of 20 v% (PT20) and 40 v% (PT40) content. In comparison with PT20 and PEKK, the surface hydrophilicity, surface energy, roughness and proteins adsorption as well as mechanical performances of PT40 significantly increased because of the higher Ta particles content in PEKK. Furthermore, PT40 exhibited the mechanical performances (e.g., compressive strength and modulus of elasticity) close to the cortical bone of human. Compared with PT20 and PEKK, PT40 with higher Ta content remarkably enhanced the responses (including adhesion, proliferation and osteogenic differentiation) of MC3T3-E1 cells in vitro . Moreover, PT40 markedly improved bone formation as well as osseointegration in vivo . In short, incorporation of Ta microparticles into PEKK created implantable composites with improved surface performances, which played key roles in stimulating cell responses/bone formation as well as promoting osseointegration. PT40 might have great potential for bear-loading bone substitute.

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Section: Discussionmentioning

confidence: 97%

Implantable PEKK/tantalum microparticles composite with improved surface performances for regulating cell behaviors, promoting bone formation and osseointegration

Mei

Qian

et al. 2021

Bioactive Materials

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“…Therefore, stress values on the human arm when Nurse reaches critical positions are negligible with respect to the mentioned mechanical properties of the skeletal muscles. On the other hand, the achieved stress values are negligible with respect to the average bending strength (the material's ability to withstand stress) of the humerus (128,430 × 10 3 N/m 2 ), ulna (135,160 × 10 3 N/m 2 ), and radius (80,310 × 10 3 N/m 2 ) [50]. In summary, the stress results show that the Nurse operation is safe for the human arm.…”

Section: Operation Safetymentioning

confidence: 98%

Operation Safety of a 2-DoF Planar Mechanism for Arm Rehabilitation

et al. 2021

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The operation safety of rehabilitation devices must be addressed early in the development process and before being tested on people. In this paper, the operation safety of a 2-DoF (degrees of freedom) planar mechanism for arm rehabilitation is addressed. Then, the safety and efficiency of the device operation is assessed through the Transmission Index (TI) distribution in its workspace. Furthermore, the produced stresses on the human arm are assessed via the FEM (finite element method) when the rehabilitation device reaches five critical positions within its workspace. The TI distribution showed that the proposed design has a proper behaviour from a force transmission point of view, avoiding any singular configuration that might cause a control failure and subsequent risk for the user and supporting the user’s motion with a good efficiency throughout its operational workspace. The FEM analysis showed that Nurse operation is safe for the human arm since a negligible maximum stress of 6.55 × 103 N/m2 is achieved by the human arm when the device is located on the evaluated critical positions.

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“…Для задач статики вона має вигляд (2) [11][12][13]: Фізико-механічні властивості прошарків моделі (табл. 1), а також характер навантаження моделі для всіх розрахунків були прийняті постійними [3,[14][15][16][17][18]. Аналізували варіанти навантаження плечової кістки в положенні нейтральної ротації з кутами відведення в плечовому суглобі 0°, 30°, 60° і 90°.…”

Section: матеріал і методиunclassified

Analysis of the Stress-Strain State Three-Dimensional Model of a Healthy Shoulder Joint

Korzh¹,

Makarov²,

Smerdov³

et al. 2021

OTP

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Objective. To work out as close as possible to normal human anatomy three-dimensional finite element model of the shoulder joint with elastic ligaments as well as with muscles and the spatial location of their attachment points, to analyze the stress-strain state of the element proximal humerus and scapula. Methods. A geometric model of the humerus and scapulae are constructed. The three-dimensional modeling of the shoulder join based on the geometric models was used with software SolidWorks with mathematical modeling method finite elements and the stress-strain state analysis in the applicationpackage Ansys software. To approach the real conditions of the model we have added the elastic elements that mimic muscles. Model loaded with forces that reproduce the effort in the muscles, applied to the respective contact planes on the humerus head of the human bone. The stress-strain state of proximal elements is calculated in the humerus and scapula for the angles of the abduction — 0 °, 30°, 60° and 90° in neutral rotation of the humerus.Results. The tensile stresses in the scapula are distributed in such a way that at an angle of 0 ° the limb is not raised +5.67 MPa in the area below the joint depressions. The minimum values of the compressive stress have been reached 18.5 MPa. Maximum stresses are in 1.5–2 times higher area of the articular cartilage of the humerus head compared to the cartilage of the glenoid cavity of the scapula. It is established that the dependence of the valuesof the area of the contact zone in the range of change limb abduction angle (0° ... 90°) can be approximated section of a cubic parabola, with changes in area insignificant and are equal to +2.26% — 7.3 % of the value in neutral position at an angle of 0°. Minor differences with the results of similar studies indicate that the validity of the developed mathematical model. Conclusions. The proposed model would allow performing more correct mathematical modeling and comparative analysis of the stress-strain state for various methods of surgical treatment of pathology shoulder joint, in particular arthroplasty.

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Experimental assessment of biomechanical properties in human male elbow bone subjected to bending and compression loads

Cited by 21 publications

References 56 publications

Implantable PEKK/tantalum microparticles composite with improved surface performances for regulating cell behaviors, promoting bone formation and osseointegration

Implantable PEKK/tantalum microparticles composite with improved surface performances for regulating cell behaviors, promoting bone formation and osseointegration

Operation Safety of a 2-DoF Planar Mechanism for Arm Rehabilitation

Analysis of the Stress-Strain State Three-Dimensional Model of a Healthy Shoulder Joint

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