Design of an Advanced Bearing System for Total  Knee Arthroplasty

Morrison, M. L.; Jani, Shilesh; Parikh, Amit

doi:10.3390/lubricants3020475

Cited by 11 publications

(6 citation statements)

References 26 publications

(28 reference statements)

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“…This value was determined to be 120.42 ± 11.99 mm 3 in the in vitro experiment ( Table 1). The predicted wear rate and volumetric wear for the UHMWPE tibial insert were within one standard deviation of the in vitro experiment data [46,47]. The results for the tibiofemoral kinematics, UHMWPE tibial insert, and validation showed good agreement between the predicted and experimental kinematic data [45].…”

Section: Validation Of Uhmwpe Wear Modelsupporting

confidence: 54%

“…The results of the wear simulation for the UHMWPE tibial insert were validated through comparison with previous experimental studies [45][46][47]. The kinematics, wear depth, and volumetric wear of UHMWPE, PEEK, and CFR-PEEK were compared.…”

Section: Computational Wear Simulationmentioning

confidence: 99%

“…To validate the model for predicting the wear on the tibial insert, it was compared with a previous in vitro wear experiment with regard to the volumetric wear rate [46,47]. The wear rate of the model for estimating the wear of the UHMWPE insert was 24.90 mm 3 /million cycle, and that from the in vitro experimental data of Morrision et al was 23.4 ± 2.4 mm 3 /million (Table 1) after 1 million cycles [46]. The volumetric wear after 5 million cycles was compared with the experimental results of Papannagari et al [47].…”

Section: Validation Of Uhmwpe Wear Modelmentioning

confidence: 99%

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Prediction of Wear on Tibial Inserts Made of UHMWPE, PEEK, and CFR-PEEK in Total Knee Arthroplasty Using Finite-Element Analysis

2019

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The wear of tibial inserts in total knee arthroplasty (TKA) remains a major limitation of longevity. However, wear tests are expensive and time-consuming. Computational wear prediction using a finite-element (FE) model followed by validation through comparison with experimental data is effective for assessing new prosthetic designs or materials prior to functional testing and surgical implementation. In this study, the kinematics, volumetric wear, and wear depth of tibial inserts made of different materials (ultrahigh-molecular weight polyethylene (UHMWPE), polyetheretherketone (PEEK), and carbon fiber-reinforced PEEK (CFR–PEEK)) in TKA were evaluated by employing FE models and analysis. The differences among the materials were evaluated using adaptive wear modeling to predict the wear depth, volumetric wear, and kinematics under a gait loading condition. The volumetric wear and wear depth of the CFR–PEEK decreased by 87.4% and 61.3%, respectively, compared with those of the UHMWPE, whereas the PEEK exhibited increased volumetric wear and wear depth. These results suggest that CFR–PEEK is a good alternative to UHMWPE as a promising and suitable material for tibial inserts used in TKA. However, orthopedic research should be performed to evaluate the threshold conditions and appropriate applications for the newly developed and introduced biomaterial.

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Section: Validation Of Uhmwpe Wear Modelsupporting

confidence: 54%

Section: Computational Wear Simulationmentioning

confidence: 99%

Section: Validation Of Uhmwpe Wear Modelmentioning

confidence: 99%

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Prediction of Wear on Tibial Inserts Made of UHMWPE, PEEK, and CFR-PEEK in Total Knee Arthroplasty Using Finite-Element Analysis

2019

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“…Based on the initial mean surface roughness, the absolute roughness levels during in vivo service increased to the range of 0.01 µm for TiN (30.7 months) and doubled to 0.02 µm for uncoated CoCrMo (23.1 months). Thus, the surface roughness remained smoother with the TiN coating, which could be attributed to a reduced polyethylene wear rate, as demonstrated in different knee simulator tests [ 20 , 21 ].…”

Section: Discussionmentioning

confidence: 87%

High wear resistance of femoral components coated with titanium nitride: a retrieval analysis

Fabry

Zietz

Baumann

et al. 2017

Knee Surg Sports Traumatol Arthrosc

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Purpose The objective of this study was to evaluate the in vivo wear resistance of cobalt-chromium femoral components coated with titanium nitride (TiN). Our null hypothesis was that the surface damage and the thickness of the TiN coating do not correlate with the time in vivo.Methods Twenty-five TiN-coated bicondylar femoral retrievals with a mean implantation period of 30.7 ± 11.7 months were subjected to an objective surface damage analysis with a semi-quantitative assessment method. A visual examination of scratches, indentations, notches and coating breakthroughs of the surfaces was performed. The roughness and the coating thickness of the TiN coating were evaluated in the main articulation regions.ResultsNarrow scratches and indentations in the range of low flexion angles on the retrieval surfaces were the most common modes of damage. There was no evidence of delamination on the articulation surface but rather at the bottom of isolated severe indentations or notches. An analysis of three retrievals revealed a coating breakthrough in the patellofemoral joint region, resulting from patella maltracking and a dislocation. The arithmetical mean roughness of the TiN surface slightly increased with the implantation period. In contrast, the maximum peak height of the roughness profile was reduced at the condyles of the retrieved components in comparison with new, unused surfaces. No significant association between the coating thickness and implantation period was determined. Moreover, the measured values were retained in the range of the initial coating thickness even after several years of in vivo service.ConclusionsAs was demonstrated by the results of this study, the surface damage to the TiN coating did not deteriorate with the implantation period. The calculated damage scores and the measured coating thickness in particular both confirmed that the TiN coating provides low wear rates. Our findings support the use of wear-resistant TiN-coated components in total knee arthroplasty with the objective of reducing the risk of aseptic loosening. However, in terms of TiN-coated femoral components, particular attention should be paid to a correct patellar tracking in order to avoid wear propagation at the implant.

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“…Related to this is the development by Gonczy and Randall (2005) of an ASTM standard for Adhesion Strength and Mechanical Failure Modes of Ceramic Coatings by Quantitative Scratch Testing. Rapidly growing is application of ceramic components in human bodies in replacements of bones (St. John, 2015;Morrison et al, 2015;McEntire, 2016). One could provide still more examples, largely leading to the following conclusion: ceramic materials are being developed mostly aiming at their specific electrical, mechanical, and/or thermophysical properties.…”

Section: Introduction and Scopementioning

confidence: 99%

Scratch Testing of Hard Ceramics: Manifestation of Viscoelasticity

Brostow¹,

Hnatchuk²,

Prażuch³

2019

JMSR

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Viscoelasticity is studied extensively in polymers and polymer-based composites-but hardly in ceramics. We have studied viscoelastic behavior of three ceramics as manifested in scratching tests: 98 weight % B 4 C + 2% hexagonal boron nitride (h-BN), 92% B 4 C and 8% h-BN, 91% B 4 C + 5% CrSi 2 + 2% h-BN. Clear viscoelastic recovery (the groove depth becoming shallower within 2 minutes) is seen in all three materials, the recovery in each case of at least 90%. Taking into account viscoelasticity and introducing appropriate additives, one could significantly improve the scratch resistance of the boron carbides, and possibly of other hard ceramics as well.

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Design of an Advanced Bearing System for Total Knee Arthroplasty

Cited by 11 publications

References 26 publications

Prediction of Wear on Tibial Inserts Made of UHMWPE, PEEK, and CFR-PEEK in Total Knee Arthroplasty Using Finite-Element Analysis

Prediction of Wear on Tibial Inserts Made of UHMWPE, PEEK, and CFR-PEEK in Total Knee Arthroplasty Using Finite-Element Analysis

High wear resistance of femoral components coated with titanium nitride: a retrieval analysis

Scratch Testing of Hard Ceramics: Manifestation of Viscoelasticity

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