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Life
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Advances in Knee Biomechanics
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Advances in Knee Biomechanics

A special issue of Life (ISSN 2075-1729). This special issue belongs to the section "Physiology and Pathology".

Deadline for manuscript submissions: 2 December 2024 | Viewed by 1478

Special Issue Editor

Dr. Jason Shearn

E-Mail Website
Guest Editor
The Noyes Orthopaedic Biomechanics and Tissue Engineering Laboratory, University of Cincinnati, Cincinnati, OH, USA
Interests: tendon; ligament; injury; repair; healing; biomechanics

Special Issue Information

Dear Colleagues,

Knee biomechanical studies have produced insight into how the joint functions, activities that lead to injury, treatment options, rehabilitation strategies, etc., but these studies have likely only revealed a small fraction of the knowledge to be gained. We need more in-depth and comprehensive knee biomechanical studies to understand which characteristics are critical to restore during repair and track during recovery to have a significant, positive clinical impact. We have seen significant advancements in computational and experimental capabilities that have expanded the field of knee biomechanics. The advanced techniques are necessary for the translation of benchtop research and the creation and evaluation of novel treatments to significantly advance human health. The aim of this Special Issue is to examine the state-of-the-art techniques used for the study of knee biomechanics. We look forward to submissions across the spectrum from in vitro and in vivo, to computational studies, as well as studies that utilize animal and human models.

Dr. Jason Shearn
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Life is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • knee
  • tendon
  • ligament
  • injury
  • repair
  • healing
  • biomechanics
  • advanced techniques

Published Papers (2 papers)

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15 pages, 4348 KiB  
Article
Impact of Structural Compliance of a Six Degree of Freedom Joint Simulator on Virtual Ligament Force Calculation in Total Knee Endoprosthesis Testing
by Eric Kleist, Paul Henke, Leo Ruehrmund, Maeruan Kebbach, Rainer Bader and Christoph Woernle
Life 2024, 14(4), 531; https://doi.org/10.3390/life14040531 - 21 Apr 2024
Viewed by 382
Abstract
The AMTI VIVO™ six degree of freedom joint simulator allows reproducible preclinical testing of joint endoprostheses under specific kinematic and loading conditions. When testing total knee endoprosthesis, the articulating femoral and tibial components are each mounted on an actuator with two and four [...] Read more.
The AMTI VIVO™ six degree of freedom joint simulator allows reproducible preclinical testing of joint endoprostheses under specific kinematic and loading conditions. When testing total knee endoprosthesis, the articulating femoral and tibial components are each mounted on an actuator with two and four degrees of freedom, respectively. To approximate realistic physiological conditions with respect to soft tissues, the joint simulator features an integrated virtual ligament model that calculates the restoring forces of the ligament apparatus to be applied by the actuators. During joint motion, the locations of the ligament insertion points are calculated depending on both actuators’ coordinates. In the present study, we demonstrate that unintended elastic deformations of the actuators due to the specifically high contact forces in the artificial knee joint have a considerable impact on the calculated ligament forces. This study aims to investigate the effect of this structural compliance on experimental results. While the built-in algorithm for calculating the ligament forces cannot be altered by the user, a reduction of the ligament force deviations due to the elastic deformations could be achieved by preloading the articulating implant components in the reference configuration. As a proof of concept, a knee flexion motion with varying ligament conditions was simulated on the VIVO simulator and compared to data derived from a musculoskeletal multibody model of a total knee endoprosthesis. Full article
(This article belongs to the Special Issue Advances in Knee Biomechanics)
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9 pages, 1462 KiB  
Technical Note
Effects of Metatarsal Foot Orthosis on Biomechanical 3D Ground Reaction Force in Individuals with Morton Foot Syndrome during Gait: A Cross-Sectional Study
by Yongwook Kim
Life 2024, 14(3), 388; https://doi.org/10.3390/life14030388 - 14 Mar 2024
Viewed by 697
Abstract
Morton’s foot syndrome (MFS) is characterized by a distally longer head of the second metatarsal bone compared to the head of the first metatarsal bone. Few studies have investigated the effects of a foot orthosis on kinetic characteristics, such as ground reaction force [...] Read more.
Morton’s foot syndrome (MFS) is characterized by a distally longer head of the second metatarsal bone compared to the head of the first metatarsal bone. Few studies have investigated the effects of a foot orthosis on kinetic characteristics, such as ground reaction force (GRF), during walking in individuals with MFS. This study aimed to verify dynamic GRF using a 3D motion analysis system, including two platforms with and without a foot orthosis condition. Kinetic GRF data of 26 participants with MFS were collected using a motion analysis system and a force platform. Participants were asked to walk wearing standard shoes or shoes with a pad-type foot orthosis. Repeated-measures analysis of variance (ANOVA) was used to compare the kinetic GRF data in the stance phase during gait according to the side of the leg and orthotic conditions for MFS. The late sagittal and frontal peak forces showed that the presence of a foot orthosis condition significantly increased the GRF when compared with the absence of a foot orthosis condition for both sides of the feet (p < 0.05). In addition, the second vertical peak force of the GRF showed that the presence of a foot orthosis condition significantly increased the GFR when compared with the absence of a foot orthosis condition on the side of the right foot (p = 0.023). Significant effects were observed in the late sagittal and frontal peak GRFs when wearing the pad-type foot orthosis in individuals with MFS during gait. Thus, even if there are no signs and symptoms of MFS in patients diagnosed with the disease condition, clinical interventions, such as a foot orthosis, that can be simply applied to shoe insoles are needed to manage and prevent various musculoskeletal disorders that may develop in the future. It was hypothesized that when wearing a foot orthosis, the participants would walk with increased GRF during gait compared to those without an orthosis. Full article
(This article belongs to the Special Issue Advances in Knee Biomechanics)
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