Tribological characteristics of healthy tendon

Theobald, Peter; Dowson, D.; Khan, Ilyas; Jones, Michael David

doi:10.1016/j.jbiomech.2012.05.005

Cited by 9 publications

(7 citation statements)

References 34 publications

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“…While this result is most likely not a true reflection of the frictional properties of the ACL, as the tissue was not stretched in tension during friction testing, it provides a rudimentary preview of the frictional forces the ACL would experience under pulley-generated, compressive loading. The friction coefficient reported here for ACL is approximately five-fold greater than the frictional properties of bovine, deep flexor tendon (~0.005 – 0.035) described by (Theobald et al, 2012). However, a difference of this magnitude is likely, given that the tendon was tested under synovial fluid lubrication (a rich source of SZP) as opposed to saline.…”

Section: Discussioncontrasting

confidence: 56%

“…The ACL was the only tissue examined that possessed both strong staining for SZP (Figure 2C) and a high coefficient of friction (0.17). Although ligaments and tendons are loaded in tension in vivo , compressive forces develop in regions where the sinew slides over objects like a pulley, such as bone (Theobald et al, 2012). While this result is most likely not a true reflection of the frictional properties of the ACL, as the tissue was not stretched in tension during friction testing, it provides a rudimentary preview of the frictional forces the ACL would experience under pulley-generated, compressive loading.…”

Section: Discussionmentioning

confidence: 99%

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The distribution of superficial zone protein (SZP)/lubricin/PRG4 and boundary mode frictional properties of the bovine diarthrodial joint

Peng

McNary

Athanasiou

et al. 2015

Journal of Biomechanics

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The diarthrodial, knee joint is a remarkably efficient bearing system; articulating cartilage surfaces provide nearly frictionless performance with minimal wear. The low friction properties of the cartilage surfaces are due in part to the boundary lubricant, superficial zone protein (SZP); also known as lubricin or proteoglycan 4 (PRG4). In previous work, SZP localization and cartilage friction were examined across the femoral condyles. Studies in the literature have also individually investigated the other tissues that comprise the human knee and four-legged animal stifle joint, such as the meniscus or patella. However, comparisons between individual studies are limited due to the variable testing conditions employed. Friction is a system property that is dependent on the opposing articulating surface, entraining speed, and loading. A cross-comparison of the frictional properties and SZP localization across the knee/stifle joint tissues utilizing a common testing configuration is therefore needed. The objective of this investigation was to determine the friction coefficient and SZP localization of the tissues comprising the three compartments of the bovine stifle joint: patella, patellofemoral groove, femoral condyles, meniscus, tibial plateau, and anterior cruciate ligament. The boundary mode coefficient of friction was greater in tissues of the patellofemoral compartment than the lateral and medial tibiofemoral compartments. SZP immunolocalization followed this trend with reduced depth of staining and intensity in the patella and patellofemoral groove compared to the femoral condyles and tibial plateau. These results illustrate the important role of SZP in reducing friction in the tissues and compartments of the knee/stifle joint.

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Section: Discussioncontrasting

confidence: 56%

Section: Discussionmentioning

confidence: 99%

The distribution of superficial zone protein (SZP)/lubricin/PRG4 and boundary mode frictional properties of the bovine diarthrodial joint

Peng

McNary

Athanasiou

et al. 2015

Journal of Biomechanics

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“…He also extended this knowledge to study the tribological characteristics of healthy tendons. 62 This research was stimulating and led to new studies on the frictional properties of contact lenses, 63 tongue/palate systems 64 and human skin. 65 The EHL theory was used to predict the severity of contact in lubricated joints.…”

Section: Ehl In Leeds In 2000's and Beyondmentioning

confidence: 99%

Duncan Dowson and elastohydrodynamic lubrication at Leeds University

Ehret

Ghanbarzadeh

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Tribological analysis was carried out to assess the coefficient of friction of both layers of XenoMEM and of TenoGlide ® . Samples incubated in PBS overnight, were wrapped around a tube that was fixed with an inhouse designed tribometer (CSM Manufactured Systems, UK) and analysis was carried out as previously described for soft tissue using glass as static [44]. The samples remained hydrated throughout the analysis.…”

Section: Coefficient Of Friction Analysismentioning

confidence: 99%

Decellularised porcine peritoneum as a tendon protector sheet

et al. 2019

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Tissue grafts achieve high levels of compositional and mechanical integrity biomimicry and are often considered as the gold standard in clinical practice. Herein, we assessed the potential of decellularised porcine peritoneum (XenoMEM) as a tendon protector sheet and correlated its properties to a commercially available product (TenoGlide®). XenoMEM presented lower cross-linking ratio (p < 0.05), higher mechanical properties (p < 0.01), lower coefficient of friction (p < 0.01) and higher (p < 0.05) cytocompatibility with human tenocytes than TenoGlide®. In addition, XenoMEM exhibited lower (p < 0.05) immune response than TenoGlide® with macrophages. Collectively, these data support the use of XenoMEM in tendon tissue engineering.

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Tribological characteristics of healthy tendon

Cited by 9 publications

References 34 publications

The distribution of superficial zone protein (SZP)/lubricin/PRG4 and boundary mode frictional properties of the bovine diarthrodial joint

The distribution of superficial zone protein (SZP)/lubricin/PRG4 and boundary mode frictional properties of the bovine diarthrodial joint

Duncan Dowson and elastohydrodynamic lubrication at Leeds University

Decellularised porcine peritoneum as a tendon protector sheet

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