Combined effect of the body mass index and implant size on the wear of retrieved total knee prostheses

Battaglia, Santina; Taddei, Paola; Castiello, Emanuela; Tozzi, Silvia; Sudanese, A; Affatato, Saverio

doi:10.1016/j.jmbbm.2014.06.012

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…Ideally, the preclinical endurance testing should reproduce on the artificial implants the in vivo conditions of load and motion experimented by the human joint in order to assess the wear of prosthetic components and give information about materials and design optimization for prosthetic implants. The research in this field has been going on for many years [3,4] and is still strongly active in order to further increase the service life of TKRs, as evidenced by the many studies [5,6,7]. At the state of the art, two simulation concepts for the knee joint are available and defined by the International Organization for Standardization (ISO) 14243-1/3 standards: the force control (FC) and the displacement control (DC) [8,9].…”

Section: Introductionmentioning

confidence: 99%

A Critical Analysis of TKR In Vitro Wear Tests Considering Predicted Knee Joint Loads

Affatato

Ruggiero

2019

Materials

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Detailed knowledge about loading of the knee joint is essential for preclinical testing of total knee replacement. Direct measurement of joint reaction forces is generally not feasible in a clinical setting; non-invasive methods based on musculoskeletal modelling should therefore be considered as a valid alternative to the standards guidelines. The aim of this paper is to investigate the possibility of using knee joint forces calculated through musculoskeletal modelling software for developing an in vitro wear assessment protocol by using a knee wear simulator. In particular, in this work we preliminarily show a comparison of the predicted knee joint forces (in silico) during the gait with those obtained from the ISO 14243-1/3 and with those measured in vivo by other authors. Subsequently, we compare the wear results obtained from a knee wear joint simulator loaded by calculated forces in correspondence to the “normal gait” kinematics with those obtained in correspondence to the loads imposed by the ISO. The obtained results show that even if the predicted load profiles are not totally in good agreement with the loads deriving from ISO standards and from in vivo measurements, they can be useful for in vitro wear tests, since the results obtained from the simulator in terms of wear are in agreement with the literature data.

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Section: Introductionmentioning

confidence: 99%

A Critical Analysis of TKR In Vitro Wear Tests Considering Predicted Knee Joint Loads

Affatato

Ruggiero

2019

Materials

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“…In fact, this result means that large-sized prostheses have a 60.7% ({33.1 -20.6}/20.6) superior performance than medium-sized prostheses. Therefore, it has been confirmed that among other factors, e.g., tibial implant thickness [13,14], TKR size also has a significant effect on knee kinematics, or more precisely on the restored rotation.…”

Section: Discussionmentioning

confidence: 87%

“…Whether TKR size has significant role in this performance, has not been further discussed. The effect of implant size has only been focused on a few knee kinematics-related issues, e.g., the individual effect of the tibial implant thickness on the tibiofemoral angle (TFA) [13] or TKR wear [14]. With regard to wear, TKR size has been proven to be a contradictory parameter since the experimental results of Affatato et al [15], demonstrated that under the same condition larger tibial UHMWPE inserts resulted in higher wear ratios than those of the small implants.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Results of Size and Slide-Roll Effect on the Kinematics of Total Knee Replacements

Fekete¹,

Sun²,

Liu³

et al. 2018

ACTA POLYTECH HUNG

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This paper deals with two fundamental questions with regard to total knee replacement kinematics. First, it provides quantitative information about the effect of knee prosthesis size on restored knee rotation by the so-called performance function. Second, the paper introduces a hypothesis which considers the effect of slide-roll on the performance function. By means of statistical methods, a strong linear correlation between slide-roll and performance-function of the examined total knee replacements was deduced. This result can be interpreted as follows: alteration of slide-roll ratio may enhance the overall performance of total knee replacements with regard to the restored kinematics, or in this specific case, the rotation.

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Does the body mass index influence the long-term survival of unicompartmental knee prostheses? A retrospective multi-centre study

Affatato

Caputo

Bordini

2018

International Orthopaedics (SICOT)

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Combined effect of the body mass index and implant size on the wear of retrieved total knee prostheses

Cited by 8 publications

References 32 publications

A Critical Analysis of TKR In Vitro Wear Tests Considering Predicted Knee Joint Loads

A Critical Analysis of TKR In Vitro Wear Tests Considering Predicted Knee Joint Loads

Preliminary Results of Size and Slide-Roll Effect on the Kinematics of Total Knee Replacements

Does the body mass index influence the long-term survival of unicompartmental knee prostheses? A retrospective multi-centre study

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